Lines Matching defs:contrast
419 /* ranges from 1 (little contrast) up to 255 (much contrast) */
420 int contrast = auto_contr ? 0 : (SANE_UNFIX (s->val[OPT_CONTRAST].w)
428 /* ranges from 20 (little contrast) down to -20 = 235 (much contrast) */
461 Byte contrast; /* Contrast */
587 cmd.wd.contrast = contrast;
602 brightness, contrast, bright_adjust, contr_adjust, s->halftone, s->edge);
1155 /* contrast automatic correct */
1157 s->opt[OPT_AUTO_CONTRAST].title = "Automatic contrast correction";
1158 s->opt[OPT_AUTO_CONTRAST].desc = "Turns on automatic contrast correction of "
1160 "the contrast of the image to be scanned.";
1175 /* contrast */
1178 s->opt[OPT_CONTRAST].desc = "Controls the contrast of the acquired image. "
1179 "When automatic contrast is enabled, this can be used to adjust the selected contrast.";