> For photographs you could probably go as low as 25%, but for computer > generated images, you might want to use 75%. Experiment, and you will find a > suitable default for your needs. Additionally, you can always adapt the > function to take quality as a parameter. >
Or consider using libpng to save the images instead. For small images (and a 30kB uncompressed jpeg *probably* falls into that category) then PNG will quite often return a smaller file than the equivalent image stored as a jpeg, with the advantage of not introducing any compression artefatcs at all. In some work we were doing (storing computer generated image sets, not real photographs) with a relatively limited palette, the PNG's were significantly smaller than jpegs, right up to around 100kB or so, and often a lot more. PNG is particulary effective if you have large areas of flat colour in your image, which jpeg handles poorly. For actual photos, which have a lot of 'texture" to them, results can be very different, so YMMV! -- Ian _______________________________________________ fltk-opengl mailing list [email protected] http://lists.easysw.com/mailman/listinfo/fltk-opengl
