GraphicsMagick 1.3 12 Aug 08

sRGB


original (truecolor)


monochrome (bilevel)


random threshold (256 levels)

2x2 ordered dither (5 levels)

3x3 ordered dither (9 levels)

4x4 ordered dither (17 levels)

GraphicsMagick 1.3 12 Aug 08

linear


original (truecolor)


monochrome (bilevel)


random threshold (256 levels)

2x2 ordered dither (5 levels)

3x3 ordered dither (9 levels)

4x4 ordered dither (17 levels)

ImageMagick 6.4.2 9 Aug 08



original (truecolor)


monochrome (bilevel)


random threshold (256 levels)

2x2 ordered dither (5 levels)

3x3 ordered dither (9 levels)

4x4 ordered dither (17 levels)