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raw_diag_task raw_diag.c 0 [WL] peak at %d:%d (count=%d+%d above=%d left=%d,%d,%d)
[WL] peak confirmed.
Canon EOS RAWSAMPL.DAT Debug raw_diag_task -%d.ppm .ppm %s raw_diag/%s%04d/%s%s Saved %s. Release Expo Mini ISO ISO registers CMOS tweak RAW Diagnostics Raw diag... %dEV %s
%s, %s
ISO %d %s %s%d.%d Noise curve (EV) SNR curve (noise profile) Please take one more test picture of the same static scene.
Use the same settings, a solid tripod, and 10-second timer. You may need to solder some RAM chips :( Sampling data...
Fitting SNR curve...
Measured OB noise: %s%d.%02d DN
Model read noise: %s%d.%02d DN
Model gain : %s%d.%02d e/DN
Apparent read noise: %s%d.%02d e
Full well capacity : %d e
Dynamic range : %s%d.%02d EV
a = [ %d ];
b = [ x = [ y = [ R = mod(x,2) == 0 & mod(y,2) == 0;
G = mod(x,2) ~= mod(y,2);
B = mod(x,2) == 1 & mod(y,2) == 1;
plot(log2(a(R)), log2(b(R)), '.r'); hold on;
plot(log2(a(B)), log2(b(B)), '.b')
plot(log2(a(G)), log2(b(G)), '.g')
wa = prctile(a(:), 99);
wb = prctile(b(:), 99);
disp(sprintf('Exposure difference (median): %%.2f EV', median(real(log2(b/wb)-log2(a/wa)))))
clip = median(a(b>wb-200 & b Exposure difference (median brightness, or from clipping point). Compare 2 Shots HL Same analysis, but zoom on the highlights when plotting (top 4 EV). You need something overexposed in the image (e.g. a light bulb). Dark Frame Noise Compute mean, stdev and histogram from the entire image. Make sure you take a dark frame (with lens cap on). Dark Frame Grayscale Render the raw image as downsampled grayscale (reveals FPN). Dark Frame FPN Fixed-pattern noise (banding) analysis. Dark Frame FPN xcov Compare FPN between two successive dark frames. You will have to take two dark frames (with lens cap on). Optical Black + DR From OB: mean, stdev, histogram. Also white levels and DR. Optical Black Zones PROP_GUI_STATE analysis.ob_zones analysis.cmp.hl analysis.cmp analysis.jpg analysis.noise.x2 analysis.snr.x2 analysis.snr analysis.dark.fpn.xcov analysis.dark.fpn analysis.dark.gray analysis.dark.noise analysis.ob_dr screenshot enabled - Please wait...
(crunching numbers) OB error Optical black: mean %d, stdev %s%d.%02d White level: %d (%d) Dyn. range: %s%d.%03d EV %s, %s, ISO %d %s %s%d.%d Entire image: mean %d, stdev %s%d.%02d (assuming it's a dark frame) %s, %s
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Build user 2017-10-08 20:00:55 UTC Build date 2fa32bd on 2017-10-08 19:01:39 UTC by alex:
raw_diag: copy the raw buffer before saving it
Last update Technical analysis of the raw image data:
* Optical black analysis: mean, stdev, histogram, dynamic range.
* Dark frame analysis: same as OB, take a picture with lens cap on.
* SNR analysis: plot a SNR graph from a defocused image that
covers the entire tone range (from dark shadows to
overexposed highlights).
TODO:
* noise autocorrelation, trend
* detailed raw histogram, zoom on shadow and highlight areas.
* SNR colors; option to reference the SNR graphs to the scene:
http://theory.uchicago.edu/~ejm/pix/20d/tests/noise/DRwindow1d3.png
Description Technical analysis of raw image data. Noise, DR, SNR... Summary GPL License a1ex Author RAW Diagnostics Name GCC: (GNU Tools for ARM Embedded Processors) 4.8.3 20131129 (release) [ARM/embedded-4_8-branch revision 205641] A& aeabi 5TE Y O)I-/J,OLLMNMIE rutu+*.113J22 khk .symtab .strtab .shstrtab .rel.text .rodata .rodata.str1.1 .rodata.str1.4 .rel.data .rel.config_vars .rel.module_strings .bss .comment .ARM.attributes .module_hgdiff @ V % W T - 2 dW < 2 tk O l K Y `v U j Pw f x
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