Lines Matching full:grayscale
68 All switch names may be abbreviated; for example, -grayscale may be written
83 -grayscale Create monochrome JPEG file from color input.
84 Be sure to use this switch when compressing a grayscale
87 saying -grayscale, you'll get a smaller JPEG file that
226 -grayscale Force gray-scale output even if JPEG file is color.
237 colormapped format is emitted if -colors or -grayscale
247 colormapped format is emitted if -colors or -grayscale
253 gray-scale or if -grayscale is specified; otherwise
260 -grayscale is specified; otherwise, colormapped format
342 To get a quick preview of an image, use the -grayscale and/or -scale switches.
343 "-grayscale -scale 1/8" is the fastest case.
470 -grayscale Force grayscale output.
472 (ie, a standard color JPEG), resulting in a grayscale JPEG file. The
474 to grayscale than decompression, conversion, and recompression. This switch
478 a grayscale JPEG is substantially less than that for a color JPEG.)
