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    12-Apr-93 00:59:35
Fm: Erik Flom 71204,407
To: Vince Pilgrim 71333,1371
Yes, glad to catch you again! I did the tests I said I would on the JPEGs you UL'd. The results were quite interesting. . . . The Gamma settimg of 1.0 looked best, though it was a little dark and oversaturated. (As was the picture of Toria.) By combining the output of the Toaster processed signal & the original JPEG in ImageMaster, I was able to create a bitmap showing ONLY the difference between the 2 images. The results were a virtually black screen – indicating very little degradation in the processed signal. I then ran a 'Histogram equalization' on the image to optimize contrast on the data. The results showed that the greatest signal degradation occured in the high frequency portions of the image – the VERY SAME areas that would suffer the greatest artifacting from the JPEG compression. Please, do E-Mail me one of your test signals and maybe another 'real world' image in TARGA, TIFF, or PCX format for testing. (I can resize it from your default of 640×480 to the Toaster default of 752×480. I think the standard aspect ratio for Toaster pixels is 1.1:1.) I'll E-mail you the results of my tests, and upload the Terminator JPEG into AmigaArts 24 bit files for general consumption. D-2 is digital COMPOSITE video (8 bits @ 4xColor SC). D-1 is digital component video (4:2:2 Y/R-Y/B-Y). BTW, What's with this 24 bit per color per pixel stuff? Isn't that a skosh extreme for NTSC? :^) (Just curious.) Keep On Toastin' Erik Flom