"Simon Tam" on wrote... | I have a complex hi-def tv image (included). I'm trying hard to figure out | what ImageMagick processing I need in order to convert this image to a | grayscale/monochrome image but with the scoreboard text/graphics pop out a | lot more than the main image. It is likely that the scoreboard text and | graphics surrounding it are likely the highest intensity pixels on the | screen (but not always). Not sure if that helps. | | I tried the 2 color quantization method (convert image.png -colorspace | gray +dither -colors 2 -normalize) and that seemed ok but not the ideal. | Looking for other suggestions you might have. I'm trying to avoid having to | write a custom filter (not even sure exactly what I would do there but it | would be complex, like dropping pixels within a banded threshold and of | certain clustered densities, ex. portions of gray). The ideal result would | be that only the scoreboard text/graphics are the only thing left and in | monochrome but I don't think that can be achieved without some custom image | processing. | | Hope this file makes it through. Since it's a high def image (1920x270 | cropped) it's still quite large. | | I appreciate any advice you can give me. | | Regards, | Simon |
Hmm tricky, sounds like what you want is something that maps any primary color to that color, but anything else to black. One solution I can think if is take a copy of the image and make specific colors transparent, the use that to mask out all the other non-matching colors. See the second example of http://www.cit.gu.edu.au/~anthony/graphics/imagick6/color/#transparent For example convert hd-tv.png \( +clone -matte -fuzz %2 \ -transparent blue \ -transparent green \ -transparent red \ -fill black -colorize 100% \) \ -composite primary_colors.png This would return an image only showing colors close to just the specific colors specified, and replace all other colors with black. Anthony Thyssen ( System Programmer ) <[EMAIL PROTECTED]> ----------------------------------------------------------------------------- "Got orders to let no-one through," (a guard) "We're not anyone," said Bane, "and that's an order." --- Terry Pratchett ``The Carpet People'' ----------------------------------------------------------------------------- Anthony's Home is his Castle http://www.cit.gu.edu.au/~anthony/ _______________________________________________ Magick-users mailing list [email protected] http://studio.imagemagick.org/mailman/listinfo/magick-users
