As reported in 3.3.1, I would like to report on the color alteration.
The following is a comparison of the output as-is and the output through the TVAI filter (Iris) using FFMPEG’s built-in test image generation function.
Premise
The TVAI filter is internally processed in RGB, not YUV, so the test images are generated in RGB and saved as PNG (RGB).
Since the TVAI filter refers to the previous and next frames for processing, about 30 frames are output, and the 15th frame (10 or more identical frames before and after) is compared to eliminate the influence of the previous and next frames.
The TVAI filter settings are all 0.
Measurements are taken at the center of the color, since the area near the color boundary can be altered to smooth out the contours.
For Proteus 3 (Prob3) and Althemis (Ahq-12), the color alteration is in the range of up to 5, whereas for Iris, the difference is more than 10.
The less color alteration, the better the quality should be.
Recovering faded images should be done by a separate color grading process, and if done together with TVAI, it will be difficult to make adjustments.
Although the images usually do not have extreme color tints as in the test images, I hope that this will be an improvement in the future in terms of color alteration.
"C:\Program Files\Topaz Labs LLC\Topaz Video AI BETA\ffmpeg" -f lavfi -i testsrc -vframes 30 -filter_complex scale=w=1280:h=960 color%03d.png
"C:\Program Files\Topaz Labs LLC\Topaz Video AI BETA\ffmpeg" -f lavfi -i testsrc -vframes 30 -filter_complex tvai_up=device=0:model=iris-1:scale=4 coloriris%03d.png
"C:\Program Files\Topaz Labs LLC\Topaz Video AI BETA\ffmpeg" -f lavfi -i testsrc -vframes 30 -filter_complex tvai_up=device=0:model=prob-3:scale=4 colorprob3%03d.png
"C:\Program Files\Topaz Labs LLC\Topaz Video AI BETA\ffmpeg" -f lavfi -i testsrc -vframes 30 -filter_complex tvai_up=device=0:model=ahq-12:scale=4 colorahq12%
03d.png
testsrc & scale(FFMPEG)
testsrc & TVAI(Iris)
color alteration
coloralter.zip (12.6 MB)
