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Open image from stdin #10

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opened 2025-08-25 15:43:47 +02:00 by Benjamin_Loison · 18 comments
Benjamin_Loison commented 2025-08-25 15:43:47 +02:00
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Would help Benjamin_Loison/qrencode/issues/2#issuecomment-6706846.

xviewer --help
Output: 
Usage:
  xviewer [OPTION…] [FILE…]

Help Options:
  -h, --help                Show help options
  --help-all                Show all help options
  --help-gtk                Show GTK+ Options

Application Options:
  -f, --fullscreen          Open in fullscreen mode
  -g, --disable-gallery     Disable image gallery
  -s, --slide-show          Open in slideshow mode
  -n, --new-instance        Start a new instance instead of reusing an existing one
  -w, --single-window       Open in a single window, if multiple windows are open the first one is used
  --version                 Show the application's version
  --display=DISPLAY         X display to use

+4

Would help [Benjamin_Loison/qrencode/issues/2#issuecomment-6706846](https://codeberg.org/Benjamin_Loison/qrencode/issues/2#issuecomment-6706846). ``` xviewer --help ``` <details> <summary>Output:</summary> ``` Usage: xviewer [OPTION…] [FILE…] Help Options: -h, --help Show help options --help-all Show all help options --help-gtk Show GTK+ Options Application Options: -f, --fullscreen Open in fullscreen mode -g, --disable-gallery Disable image gallery -s, --slide-show Open in slideshow mode -n, --new-instance Start a new instance instead of reusing an existing one -w, --single-window Open in a single window, if multiple windows are open the first one is used --version Show the application's version --display=DISPLAY X display to use ``` </details> +4
Benjamin_Loison commented 2025-08-25 15:48:53 +02:00
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DuckDuckGo search xviewer stdin.

DuckDuckGo search *xviewer stdin*.
Benjamin_Loison commented 2025-08-25 15:49:56 +02:00
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linuxmint/xviewer/issues/175 seems to the corresponding issue upstream.

[linuxmint/xviewer/issues/175](https://github.com/linuxmint/xviewer/issues/175) seems to the corresponding issue upstream.
Benjamin_Loison commented 2025-08-25 15:52:18 +02:00
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echo | qrencode -t SVG | display

Source: the Super User answer 247890

image.png

image.png

I confirm that it is not perfect nearest neighbor with GIMP, but it may be fine enough.

``` echo | qrencode -t SVG | display ``` Source: [the Super User answer 247890](https://superuser.com/a/247890) ![image.png](/attachments/586f04ed-a6a5-454c-87a6-ca915b1fa3c8) ![image.png](/attachments/2314ab18-f4a2-438f-954b-628614671e86) I confirm that it is not perfect nearest neighbor with GIMP, but it may be fine enough.
image.png
2.8 KiB
image.png
287 KiB
Benjamin_Loison commented 2025-08-25 15:52:42 +02:00
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display --help
Output: 
display-im6.q16: unable to open image `--help': No such file or directory @ error/blob.c/OpenBlob/2964.
display-im6.q16: no decode delegate for this image format `' @ error/constitute.c/ReadImage/581.

image.png

``` display --help ``` <details> <summary>Output:</summary> ``` display-im6.q16: unable to open image `--help': No such file or directory @ error/blob.c/OpenBlob/2964. display-im6.q16: no decode delegate for this image format `' @ error/constitute.c/ReadImage/581. ``` </details> ![image.png](/attachments/d9425db7-c4cf-471c-b618-d855aa417c86)
image.png
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Benjamin_Loison commented 2025-08-25 15:52:50 +02:00
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display -h

display-im6.q16: unrecognized option `-h' @ error/display.c/DisplayImageCommand/1197.
``` display -h ``` ``` display-im6.q16: unrecognized option `-h' @ error/display.c/DisplayImageCommand/1197. ```
Benjamin_Loison commented 2025-08-25 15:53:04 +02:00
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man display
Output: 
display-im6.q16(1)                                      General Commands Manual                                      display-im6.q16(1)

NAME
       display - displays an image or image sequence on any X server.

SYNOPSIS
       display-im6.q16 [options] input-file

OVERVIEW
       The  display-im6.q16 program is a member of the ImageMagick-ims6.q16(1) suite of tools.  Use it to display an image or image se‐
       quence on any X server.

       For more information about the display command, point your browser  to  file:///usr/share/doc/imagemagick-6-common/html/www/dis‐
       play.html (on debian system you may install the imagemagick-6 package) or https://www.imagemagick.org/script/display.php.

DESCRIPTION
       Image Settings:
         -alpha option        on, activate, off, deactivate, set, opaque, copy
                              transparent, extract, background, or shape
         -antialias           remove pixel-aliasing
         -authenticate value  decrypt image with this password
         -backdrop            display image centered on a backdrop
         -channel type        apply option to select image channels
         -colormap type       Shared or Private
         -colorspace type     alternate image colorspace
         -comment string      annotate image with comment
         -compress type       type of pixel compression when writing the image
         -decipher filename   convert cipher pixels to plain pixels
         -deskew threshold    straighten an image
         -define format:option
                              define one or more image format options
         -delay centiseconds  display the next image after pausing
         -density geometry    horizontal and vertical density of the image
         -depth value         image depth
         -display server      display image to this X server
         -dispose method      layer disposal method
         -dither method       apply error diffusion to image
         -endian type         endianness (MSB or LSB) of the image
         -equalize            perform histogram equalization to an image
         -filter type         use this filter when resizing an image
         -format "string"     output formatted image characteristics
         -fuzz distance       colors within this distance are considered equal
         -geometry geometry   preferred size and location of the Image window
         -gravity type        horizontal and vertical backdrop placement
         -identify            identify the format and characteristics of the image
         -immutable           displayed image cannot be modified
         -interlace type      type of image interlacing scheme
         -interpolate method  pixel color interpolation method
         -label string        assign a label to an image
         -limit type value    pixel cache resource limit
         -loop iterations     loop images then exit
         -map type            display image using this Standard Colormap
         -matte               store matte channel if the image has one
         -monitor             monitor progress
         -page geometry       size and location of an image canvas
         -profile filename    add, delete, or apply an image profile
         -quality value       JPEG/MIFF/PNG compression level
         -quantize colorspace reduce colors in this colorspace
         -quiet               suppress all warning messages
         -regard-warnings     pay attention to warning messages
         -remote command      execute a command in an remote display process
         -repage geometry     size and location of an image canvas (operator)
         -respect-parentheses settings remain in effect until parenthesis boundary
         -sampling-factor geometry
                              horizontal and vertical sampling factor
         -scenes range        image scene range
         -seed value          seed a new sequence of pseudo-random numbers
         -set property value  set an image property
         -size geometry       width and height of image
         -support factor      resize support: > 1.0 is blurry, < 1.0 is sharp
         -texture filename    name of texture to tile onto the image background
         -transparent-color color
                              transparent color
         -treedepth value     color tree depth
         -update seconds      detect when image file is modified and redisplay
         -verbose             print detailed information about the image
         -visual type         display image using this visual type
         -virtual-pixel method
                              virtual pixel access method
         -window id           display image to background of this window
         -window-group id     exit program when this window id is destroyed
         -write filename      write image to a file

       Image Operators:
         -auto-orient         automatically orient image
         -border geometry     surround image with a border of color
         -clip                clip along the first path from the 8BIM profile
         -clip-path id        clip along a named path from the 8BIM profile
         -colors value        preferred number of colors in the image
         -contrast            enhance or reduce the image contrast
         -crop geometry       preferred size and location of the cropped image
         -despeckle           reduce the speckles within an image
         -edge factor         apply a filter to detect edges in the image
         -enhance             apply a digital filter to enhance a noisy image
         -extract geometry    extract area from image
         -flip                flip image in the vertical direction
         -flop                flop image in the horizontal direction
         -frame geometry      surround image with an ornamental border
         -gamma value         level of gamma correction
         -monochrome          transform image to black and white
         -negate              replace each pixel with its complementary color
         -normalize           transform image to span the full range of colors
         -raise value         lighten/darken image edges to create a 3-D effect
         -resample geometry   change the resolution of an image
         -resize geometry     resize the image
         -roll geometry       roll an image vertically or horizontally
         -rotate degrees      apply Paeth rotation to the image
         -sample geometry     scale image with pixel sampling
         -segment value       segment an image
         -sharpen geometry    sharpen the image
         -strip               strip image of all profiles and comments
         -threshold value     threshold the image
         -thumbnail geometry  create a thumbnail of the image
         -trim                trim image edges

       Image Sequence Operators:
         -coalesce            merge a sequence of images
         -flatten             flatten a sequence of images

       Miscellaneous Options:
         -debug events        display copious debugging information
         -help                print program options
         -log format          format of debugging information
         -list type           print a list of supported option arguments
         -version             print version information

       In  addition  to  those listed above, you can specify these standard X resources as command line options:  -background, -border‐
       color, -borderwidth, -font, -foreground, -iconGeometry, -iconic, -mattecolor, -name, -shared-memory, -usePixmap, or -title.

       By default, the image format of `file' is determined by its magic number.  To specify a particular  image  format,  precede  the
       filename with an image format name and a colon (i.e. ps:image) or specify the image type as the filename suffix (i.e. image.ps).
       Specify 'file' as '-' for standard input or output.

       Buttons:
         1    press to map or unmap the Command widget
         2    press and drag to magnify a region of an image
         3    press to load an image from a visual image directory

NOTE
       The display program defaults to the X screen resolution.  To display vector formats at their intended size, override the default
       resolution:

         display -density 72 drawing.svg

SEE ALSO
       ImageMagick-im6.q16(1)

COPYRIGHT
       Copyright   (C)   1999-2021   ImageMagick   Studio  LLC.  Additional  copyrights  and  licenses  apply  to  this  software,  see
       file:///usr/share/doc/imagemagick-6-common/html/www/license.html (on debian system you may install the imagemagick-6 package) or
       https://www.imagemagick.org/script/license.php

ImageMagick                                            Date: 2009/01/10 01:00:00                                     display-im6.q16(1)
``` man display ``` <details> <summary>Output:</summary> ``` display-im6.q16(1) General Commands Manual display-im6.q16(1) NAME display - displays an image or image sequence on any X server. SYNOPSIS display-im6.q16 [options] input-file OVERVIEW The display-im6.q16 program is a member of the ImageMagick-ims6.q16(1) suite of tools. Use it to display an image or image se‐ quence on any X server. For more information about the display command, point your browser to file:///usr/share/doc/imagemagick-6-common/html/www/dis‐ play.html (on debian system you may install the imagemagick-6 package) or https://www.imagemagick.org/script/display.php. DESCRIPTION Image Settings: -alpha option on, activate, off, deactivate, set, opaque, copy transparent, extract, background, or shape -antialias remove pixel-aliasing -authenticate value decrypt image with this password -backdrop display image centered on a backdrop -channel type apply option to select image channels -colormap type Shared or Private -colorspace type alternate image colorspace -comment string annotate image with comment -compress type type of pixel compression when writing the image -decipher filename convert cipher pixels to plain pixels -deskew threshold straighten an image -define format:option define one or more image format options -delay centiseconds display the next image after pausing -density geometry horizontal and vertical density of the image -depth value image depth -display server display image to this X server -dispose method layer disposal method -dither method apply error diffusion to image -endian type endianness (MSB or LSB) of the image -equalize perform histogram equalization to an image -filter type use this filter when resizing an image -format "string" output formatted image characteristics -fuzz distance colors within this distance are considered equal -geometry geometry preferred size and location of the Image window -gravity type horizontal and vertical backdrop placement -identify identify the format and characteristics of the image -immutable displayed image cannot be modified -interlace type type of image interlacing scheme -interpolate method pixel color interpolation method -label string assign a label to an image -limit type value pixel cache resource limit -loop iterations loop images then exit -map type display image using this Standard Colormap -matte store matte channel if the image has one -monitor monitor progress -page geometry size and location of an image canvas -profile filename add, delete, or apply an image profile -quality value JPEG/MIFF/PNG compression level -quantize colorspace reduce colors in this colorspace -quiet suppress all warning messages -regard-warnings pay attention to warning messages -remote command execute a command in an remote display process -repage geometry size and location of an image canvas (operator) -respect-parentheses settings remain in effect until parenthesis boundary -sampling-factor geometry horizontal and vertical sampling factor -scenes range image scene range -seed value seed a new sequence of pseudo-random numbers -set property value set an image property -size geometry width and height of image -support factor resize support: > 1.0 is blurry, < 1.0 is sharp -texture filename name of texture to tile onto the image background -transparent-color color transparent color -treedepth value color tree depth -update seconds detect when image file is modified and redisplay -verbose print detailed information about the image -visual type display image using this visual type -virtual-pixel method virtual pixel access method -window id display image to background of this window -window-group id exit program when this window id is destroyed -write filename write image to a file Image Operators: -auto-orient automatically orient image -border geometry surround image with a border of color -clip clip along the first path from the 8BIM profile -clip-path id clip along a named path from the 8BIM profile -colors value preferred number of colors in the image -contrast enhance or reduce the image contrast -crop geometry preferred size and location of the cropped image -despeckle reduce the speckles within an image -edge factor apply a filter to detect edges in the image -enhance apply a digital filter to enhance a noisy image -extract geometry extract area from image -flip flip image in the vertical direction -flop flop image in the horizontal direction -frame geometry surround image with an ornamental border -gamma value level of gamma correction -monochrome transform image to black and white -negate replace each pixel with its complementary color -normalize transform image to span the full range of colors -raise value lighten/darken image edges to create a 3-D effect -resample geometry change the resolution of an image -resize geometry resize the image -roll geometry roll an image vertically or horizontally -rotate degrees apply Paeth rotation to the image -sample geometry scale image with pixel sampling -segment value segment an image -sharpen geometry sharpen the image -strip strip image of all profiles and comments -threshold value threshold the image -thumbnail geometry create a thumbnail of the image -trim trim image edges Image Sequence Operators: -coalesce merge a sequence of images -flatten flatten a sequence of images Miscellaneous Options: -debug events display copious debugging information -help print program options -log format format of debugging information -list type print a list of supported option arguments -version print version information In addition to those listed above, you can specify these standard X resources as command line options: -background, -border‐ color, -borderwidth, -font, -foreground, -iconGeometry, -iconic, -mattecolor, -name, -shared-memory, -usePixmap, or -title. By default, the image format of `file' is determined by its magic number. To specify a particular image format, precede the filename with an image format name and a colon (i.e. ps:image) or specify the image type as the filename suffix (i.e. image.ps). Specify 'file' as '-' for standard input or output. Buttons: 1 press to map or unmap the Command widget 2 press and drag to magnify a region of an image 3 press to load an image from a visual image directory NOTE The display program defaults to the X screen resolution. To display vector formats at their intended size, override the default resolution: display -density 72 drawing.svg SEE ALSO ImageMagick-im6.q16(1) COPYRIGHT Copyright (C) 1999-2021 ImageMagick Studio LLC. Additional copyrights and licenses apply to this software, see file:///usr/share/doc/imagemagick-6-common/html/www/license.html (on debian system you may install the imagemagick-6 package) or https://www.imagemagick.org/script/license.php ImageMagick Date: 2009/01/10 01:00:00 display-im6.q16(1) ``` </details>
Benjamin_Loison commented 2025-08-25 15:53:59 +02:00
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-antialias does not seem to help.

-interpolate does not specify available methods.

`-antialias` does not seem to help. `-interpolate` does not specify available *method*s.
Benjamin_Loison commented 2025-08-25 15:54:33 +02:00
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PNG with arbitrary resolution may not have this issue, but I don't want such workaround.

PNG with arbitrary resolution may not have this issue, but I don't want such workaround.
Benjamin_Loison commented 2025-08-25 15:55:01 +02:00
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display -help
Output: 
Version: ImageMagick 6.9.12-98 Q16 x86_64 18038 https://legacy.imagemagick.org
Copyright: (C) 1999 ImageMagick Studio LLC
License: https://imagemagick.org/script/license.php
Features: Cipher DPC Modules OpenMP(4.5) 
Delegates (built-in): bzlib djvu fftw fontconfig freetype heic jbig jng jp2 jpeg lcms lqr ltdl lzma openexr pangocairo png raw tiff webp wmf x xml zlib
Usage: display-im6.q16 [options ...] file [ [options ...] file ...]

Image Settings:
  -alpha option        on, activate, off, deactivate, set, opaque, copy
                       transparent, extract, background, or shape
  -antialias           remove pixel-aliasing
  -authenticate password
                       decipher image with this password
  -backdrop            display image centered on a backdrop
  -channel type        apply option to select image channels
  -colormap type       Shared or Private
  -colorspace type     alternate image colorspace
  -comment string      annotate image with comment
  -compress type       type of pixel compression when writing the image
  -define format:option
                       define one or more image format options
  -delay value         display the next image after pausing
  -density geometry    horizontal and vertical density of the image
  -depth value         image depth
  -display server      display image to this X server
  -dispose method      layer disposal method
  -dither method       apply error diffusion to image
  -endian type         endianness (MSB or LSB) of the image
  -filter type         use this filter when resizing an image
  -format string     output formatted image characteristics
  -geometry geometry   preferred size and location of the Image window
  -gravity type        horizontal and vertical backdrop placement
  -identify            identify the format and characteristics of the image
  -immutable           displayed image cannot be modified
  -interlace type      type of image interlacing scheme
  -interpolate method  pixel color interpolation method
  -label string        assign a label to an image
  -limit type value    pixel cache resource limit
  -loop iterations     loop images then exit
  -map type            display image using this Standard Colormap
  -matte               store matte channel if the image has one
  -monitor             monitor progress
  -nostdin             do not try to open stdin
  -page geometry       size and location of an image canvas
  -profile filename    add, delete, or apply an image profile
  -quality value       JPEG/MIFF/PNG compression level
  -quantize colorspace reduce colors in this colorspace
  -quiet               suppress all warning messages
  -regard-warnings     pay attention to warning messages
  -remote command      execute a command in an remote display process
  -repage geometry     size and location of an image canvas (operator)
  -respect-parentheses settings remain in effect until parenthesis boundary
  -sampling-factor geometry
                       horizontal and vertical sampling factor
  -scenes range        image scene range
  -seed value          seed a new sequence of pseudo-random numbers
  -set property value  set an image property
  -size geometry       width and height of image
  -support factor      resize support: > 1.0 is blurry, < 1.0 is sharp
  -texture filename    name of texture to tile onto the image background
  -transparent-color color
                       transparent color
  -treedepth value     color tree depth
  -update seconds      detect when image file is modified and redisplay
  -verbose             print detailed information about the image
  -visual type         display image using this visual type
  -virtual-pixel method
                       virtual pixel access method
  -window id           display image to background of this window
  -window-group id     exit program when this window id is destroyed
  -write filename      write image to a file

Image Operators:
  -auto-orient         automagically orient image
  -border geometry     surround image with a border of color
  -clip                clip along the first path from the 8BIM profile
  -clip-path id        clip along a named path from the 8BIM profile
  -colors value        preferred number of colors in the image
  -contrast            enhance or reduce the image contrast
  -crop geometry       preferred size and location of the cropped image
  -decipher filename   convert cipher pixels to plain pixels
  -deskew threshold    straighten an image
  -despeckle           reduce the speckles within an image
  -edge factor         apply a filter to detect edges in the image
  -enhance             apply a digital filter to enhance a noisy image
  -equalize            perform histogram equalization to an image
  -extract geometry    extract area from image
  -flip                flip image in the vertical direction
  -flop                flop image in the horizontal direction
  -frame geometry      surround image with an ornamental border
  -fuzz distance       colors within this distance are considered equal
  -gamma value         level of gamma correction
  -monochrome          transform image to black and white
  -negate              replace every pixel with its complementary color
  -normalize           transform image to span the full range of colors
  -raise value         lighten/darken image edges to create a 3-D effect
  -resample geometry   change the resolution of an image
  -resize geometry     resize the image
  -roll geometry       roll an image vertically or horizontally
  -rotate degrees      apply Paeth rotation to the image
  -sample geometry     scale image with pixel sampling
  -segment value       segment an image
  -sharpen geometry    sharpen the image
  -strip               strip image of all profiles and comments
  -threshold value     threshold the image
  -thumbnail geometry  create a thumbnail of the image
  -trim                trim image edges

Image Sequence Operators:
  -coalesce            merge a sequence of images
  -flatten             flatten a sequence of images

Miscellaneous Options:
  -debug events        display copious debugging information
  -help                print program options
  -list type           print a list of supported option arguments
  -log format          format of debugging information
  -version             print version information

In addition to those listed above, you can specify these standard X
resources as command line options:  -background, -bordercolor,
-borderwidth, -font, -foreground, -iconGeometry, -iconic, -mattecolor,
-name, -shared-memory, -usePixmap, or -title.

By default, the image format of `file' is determined by its magic
number.  To specify a particular image format, precede the filename
with an image format name and a colon (i.e. ps:image) or specify the
image type as the filename suffix (i.e. image.ps).  Specify 'file' as
'-' for standard input or output.

Buttons: 
  1    press to map or unmap the Command widget
  2    press and drag to magnify a region of an image
  3    press to load an image from a visual image directory
``` display -help ``` <details> <summary>Output:</summary> ``` Version: ImageMagick 6.9.12-98 Q16 x86_64 18038 https://legacy.imagemagick.org Copyright: (C) 1999 ImageMagick Studio LLC License: https://imagemagick.org/script/license.php Features: Cipher DPC Modules OpenMP(4.5) Delegates (built-in): bzlib djvu fftw fontconfig freetype heic jbig jng jp2 jpeg lcms lqr ltdl lzma openexr pangocairo png raw tiff webp wmf x xml zlib Usage: display-im6.q16 [options ...] file [ [options ...] file ...] Image Settings: -alpha option on, activate, off, deactivate, set, opaque, copy transparent, extract, background, or shape -antialias remove pixel-aliasing -authenticate password decipher image with this password -backdrop display image centered on a backdrop -channel type apply option to select image channels -colormap type Shared or Private -colorspace type alternate image colorspace -comment string annotate image with comment -compress type type of pixel compression when writing the image -define format:option define one or more image format options -delay value display the next image after pausing -density geometry horizontal and vertical density of the image -depth value image depth -display server display image to this X server -dispose method layer disposal method -dither method apply error diffusion to image -endian type endianness (MSB or LSB) of the image -filter type use this filter when resizing an image -format string output formatted image characteristics -geometry geometry preferred size and location of the Image window -gravity type horizontal and vertical backdrop placement -identify identify the format and characteristics of the image -immutable displayed image cannot be modified -interlace type type of image interlacing scheme -interpolate method pixel color interpolation method -label string assign a label to an image -limit type value pixel cache resource limit -loop iterations loop images then exit -map type display image using this Standard Colormap -matte store matte channel if the image has one -monitor monitor progress -nostdin do not try to open stdin -page geometry size and location of an image canvas -profile filename add, delete, or apply an image profile -quality value JPEG/MIFF/PNG compression level -quantize colorspace reduce colors in this colorspace -quiet suppress all warning messages -regard-warnings pay attention to warning messages -remote command execute a command in an remote display process -repage geometry size and location of an image canvas (operator) -respect-parentheses settings remain in effect until parenthesis boundary -sampling-factor geometry horizontal and vertical sampling factor -scenes range image scene range -seed value seed a new sequence of pseudo-random numbers -set property value set an image property -size geometry width and height of image -support factor resize support: > 1.0 is blurry, < 1.0 is sharp -texture filename name of texture to tile onto the image background -transparent-color color transparent color -treedepth value color tree depth -update seconds detect when image file is modified and redisplay -verbose print detailed information about the image -visual type display image using this visual type -virtual-pixel method virtual pixel access method -window id display image to background of this window -window-group id exit program when this window id is destroyed -write filename write image to a file Image Operators: -auto-orient automagically orient image -border geometry surround image with a border of color -clip clip along the first path from the 8BIM profile -clip-path id clip along a named path from the 8BIM profile -colors value preferred number of colors in the image -contrast enhance or reduce the image contrast -crop geometry preferred size and location of the cropped image -decipher filename convert cipher pixels to plain pixels -deskew threshold straighten an image -despeckle reduce the speckles within an image -edge factor apply a filter to detect edges in the image -enhance apply a digital filter to enhance a noisy image -equalize perform histogram equalization to an image -extract geometry extract area from image -flip flip image in the vertical direction -flop flop image in the horizontal direction -frame geometry surround image with an ornamental border -fuzz distance colors within this distance are considered equal -gamma value level of gamma correction -monochrome transform image to black and white -negate replace every pixel with its complementary color -normalize transform image to span the full range of colors -raise value lighten/darken image edges to create a 3-D effect -resample geometry change the resolution of an image -resize geometry resize the image -roll geometry roll an image vertically or horizontally -rotate degrees apply Paeth rotation to the image -sample geometry scale image with pixel sampling -segment value segment an image -sharpen geometry sharpen the image -strip strip image of all profiles and comments -threshold value threshold the image -thumbnail geometry create a thumbnail of the image -trim trim image edges Image Sequence Operators: -coalesce merge a sequence of images -flatten flatten a sequence of images Miscellaneous Options: -debug events display copious debugging information -help print program options -list type print a list of supported option arguments -log format format of debugging information -version print version information In addition to those listed above, you can specify these standard X resources as command line options: -background, -bordercolor, -borderwidth, -font, -foreground, -iconGeometry, -iconic, -mattecolor, -name, -shared-memory, -usePixmap, or -title. By default, the image format of `file' is determined by its magic number. To specify a particular image format, precede the filename with an image format name and a colon (i.e. ps:image) or specify the image type as the filename suffix (i.e. image.ps). Specify 'file' as '-' for standard input or output. Buttons: 1 press to map or unmap the Command widget 2 press and drag to magnify a region of an image 3 press to load an image from a visual image directory ``` </details>
Benjamin_Loison commented 2025-08-25 15:55:25 +02:00
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DuckDuckGo and Google search "display" "-interpolate", "display" "-interpolate" "method" and Image Magick "-interpolate".

echo | qrencode -t SVG | display -interpolate Integer

Source: the Stack Overflow comment 136880056

does not seem to help.

DuckDuckGo and Google search `"display" "-interpolate"`, `"display" "-interpolate" "method"` and `Image Magick "-interpolate"`. ``` echo | qrencode -t SVG | display -interpolate Integer ``` Source: [the Stack Overflow comment 136880056](https://stackoverflow.com/questions/32485277/imagemagick-resize-without-interpolation#comment136880056_32494155) does not seem to help.
Benjamin_Loison commented 2025-08-25 15:58:45 +02:00
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echo | qrencode -t SVG | display -interpolate nearest-neighbor

does not help.

echo | qrencode -t SVG | display -interpolate nearest-neighbore

display-im6.q16: unrecognized interpolate method `nearest-neighbore' @ error/display.c/DisplayImageCommand/1256.
``` echo | qrencode -t SVG | display -interpolate nearest-neighbor ``` does not help. ``` echo | qrencode -t SVG | display -interpolate nearest-neighbore ``` ``` display-im6.q16: unrecognized interpolate method `nearest-neighbore' @ error/display.c/DisplayImageCommand/1256. ```
Benjamin_Loison commented 2025-08-25 15:59:06 +02:00
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echo | qrencode -t SVG | display -interpolate nearest-neighbor

Source: the Stack Overflow answer 71515513

does not help.

echo | qrencode -t SVG | display -interpolate nearest-neighbore

display-im6.q16: unrecognized interpolate method `nearest-neighbore' @ error/display.c/DisplayImageCommand/1256.
``` echo | qrencode -t SVG | display -interpolate nearest-neighbor ``` Source: [the Stack Overflow answer 71515513](https://stackoverflow.com/a/71515513) does not help. ``` echo | qrencode -t SVG | display -interpolate nearest-neighbore ``` ``` display-im6.q16: unrecognized interpolate method `nearest-neighbore' @ error/display.c/DisplayImageCommand/1256. ```
Benjamin_Loison commented 2025-08-26 04:57:45 +02:00
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DuckDuckGo and Google search ImageMagick display full screen and ImageMagick display full screen SVG.

DuckDuckGo and Google search *ImageMagick display full screen* and *ImageMagick display full screen SVG*.
Benjamin_Loison commented 2025-08-26 04:58:51 +02:00
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display -help | grep -iE 'max|full|window'
Output: 
  -geometry geometry   preferred size and location of the Image window
  -window id           display image to background of this window
  -window-group id     exit program when this window id is destroyed
  -normalize           transform image to span the full range of colors

-geometry could help, but does not seem perfect.

```bash display -help | grep -iE 'max|full|window' ``` <details> <summary>Output:</summary> ``` -geometry geometry preferred size and location of the Image window -window id display image to background of this window -window-group id exit program when this window id is destroyed -normalize transform image to span the full range of colors ``` </details> `-geometry` could help, but does not seem perfect.
Benjamin_Loison commented 2025-08-26 04:59:03 +02:00
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man display | grep -iE 'max|full|window'
Output: 
         -geometry geometry   preferred size and location of the Image window
         -window id           display image to background of this window
         -window-group id     exit program when this window id is destroyed
         -normalize           transform image to span the full range of colors
```bash man display | grep -iE 'max|full|window' ``` <details> <summary>Output:</summary> ``` -geometry geometry preferred size and location of the Image window -window id display image to background of this window -window-group id exit program when this window id is destroyed -normalize transform image to span the full range of colors ``` </details>
Benjamin_Loison commented 2025-08-26 05:08:05 +02:00
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Google search ImageMagick display maximize window SVG does not seem to help too.

Google search *ImageMagick display maximize window SVG* does not seem to help too.
Benjamin_Loison commented 2025-08-26 05:12:50 +02:00
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Should investigate PNG.

Should investigate PNG.
Benjamin_Loison commented 2026-01-24 02:16:00 +01:00
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What about Eye of GNOME?

What about Eye of GNOME?
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