When identifying a JPEG image via -identify - verbose something.jpg
I get (amongst others) the lines: JPEG-Colorspace: 2 JPEG-Sampling-factors: 2x2,1x1,1x1 I bet that JPEG Colorspace no. 2 is RGB (?). But I am really confused by the sampling factors, which I attribute to Y, Cr, Cb. Now, Y should not be sub-sampled at all and Cr and Cb should be subsampled either by the factor 2 (when counting in just one direction) or 4 (when counting the amount of pixels). So what does the above line this really tell us? I could not find any detailed explanation for the output of 'identify'. BTW: Is there any way that I can visualize the Y, Cr, Cb channels of the JPEG, i.e. split the Image into these channels? As IM recognizes JPEG as RGB, the simple -separate option will not do. Greetings from Münster, Germany Wolfgang Hugemann _______________________________________________ Magick-users mailing list [email protected] http://studio.imagemagick.org/mailman/listinfo/magick-users
