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Benjamin_Loison commented on issue Benjamin_Loison/Robust_image_source_identifica…#63 2024-05-13 20:23:51 +02:00
Attribute source camera

RAISE,Rafael 23_04_24_mean_accuracy_of_camera_source_attribution

![RAISE,Rafael 23_04_24_mean_estimated_prnu_camera_Rafael 23_04_24](/attach…

ce64450101 Load lazily images (#62)
10f8766793 First try lazy load
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Benjamin_Loison commented on issue Benjamin_Loison/Robust_image_source_identifica…#62 2024-05-13 18:55:53 +02:00
Optimize execution speed

My tests seem biased due to a cache.

Benjamin_Loison commented on issue Benjamin_Loison/Robust_image_source_identifica…#62 2024-05-13 18:43:11 +02:00
Optimize execution speed

Saving each color channel in a different file:

OPERATION = <Operation.SAVE: 2>
Image: 100%
f85e63b6e0 #62: First lazy load try
ac32abede1 Save all colors
Benjamin_Loison commented on issue Benjamin_Loison/Robust_image_source_identifica…#62 2024-05-13 18:21:55 +02:00
Optimize execution speed

Well I was only saving the last color.

Benjamin_Loison commented on issue Benjamin_Loison/Robust_image_source_identifica…#62 2024-05-13 18:08:23 +02:00
Optimize execution speed

Serializing for all colors on both cameras:

time ./benchmark_load_part_of_images.py
Image: 100%
Benjamin_Loison commented on issue Benjamin_Loison/Robust_image_source_identifica…#62 2024-05-13 17:56:55 +02:00
Optimize execution speed

Related to Benjamin_Loison/rawpy/issues/2.

36b17eb3cc #62: Add benchmark_load_part_of_images.py
fb0f78e069 Add the ability to hardcode resolution
86093a40c0 Load training images to memory to ease implementation and make execution
54178c1101 #72: Verify actual data type pointer
50058d5d2e #72: Verify pointer before actually implementing the correct second choice
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Benjamin_Loison commented on issue Benjamin_Loison/Robust_image_source_identifica…#62 2024-05-13 17:19:44 +02:00
Optimize execution speed 
time ./benchmark_load_part_of_images.py
Image: 100%
Benjamin_Loison commented on issue Benjamin_Loison/Robust_image_source_identifica…#62 2024-05-13 16:42:56 +02:00
Optimize execution speed

Thought about using benchmark_raw_images_loading.py:

#!/usr/bin/env python

from tqdm import tqdm

IMAGES_CAMERAS_FOLDER = {
    'RAISE': 'flat-field/nef',
    'Rafael…
Benjamin_Loison commented on issue Benjamin_Loison/Robust_image_source_identifica…#72 2024-05-13 16:41:17 +02:00
Correctly implement iterative mean for camera attribution 
class iterativeMean:
    mean = None
    numberOfElementsInMean = 0

    def add(self, element):
        if self.mean is None:
            self.mean = element
        else:
    …
Benjamin_Loison commented on issue Benjamin_Loison/Robust_image_source_identifica…#62 2024-05-13 16:37:48 +02:00
Optimize execution speed

It does not seem that can only load part of a raw image with rawpy, if even possible at all.

In getRawColorChannel:

rawImageVisible = raw.raw_image_visible.copy()[:100,…
Benjamin_Loison commented on issue Benjamin_Loison/Robust_image_source_identifica…#72 2024-05-13 16:21:34 +02:00
Correctly implement iterative mean for camera attribution

50 images for both cameras take about 22 GB of memory.

Benjamin_Loison commented on issue Benjamin_Loison/Robust_image_source_identifica…#66 2024-05-13 15:58:23 +02:00
Implement correlation

Should implement an enum to choose between RMS and correlation.

Benjamin_Loison commented on issue Benjamin_Loison/Robust_image_source_identifica…#72 2024-05-13 14:50:27 +02:00
Correctly implement iterative mean for camera attribution

Implementation

So now let us correct the implementation to implement:

  • $prnu_{camera}^l = \text{mean}(image_{camera}^{training_j} − denoiser(image_{camera}^{training_j}, l, camera) \text{…
Correctly implement iterative mean for camera attribution
5e6702e007 #63: use scipy.stats.pearsonr
1a910d2e2c Add a try with numpy.corrcoef
6ed57bc477 Precise purpose of a part of code
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