Hello everyone,
I'm trying to differentiate between two grayscale images, which are at
a first glance equal. In detail it shows, that via identify -verbose the
only differences lie in the colormap the rest of the output is exactly
the same. AFAIK is one image saved as palette and the other is not. Is
there a possibility to differentiate with IM between those two images or
convert the palette image to the preferred grayscale image, which is now
only possible in CorelDraw.
I'm using ImageMagick-6.4.7-Q16.
g-bernd
A digest of the identify output follows:
Image: IMG00006341_graustufe.bmp (This is the preferred one)
Format: BMP (Microsoft Windows bitmap image)
Class: PseudoClass
Geometry: 324x423+0+0
Resolution: 196.85x196.85
Print size: 1.64592x2.14884
Units: PixelsPerCentimeter
Type: Grayscale
Base type: Grayscale
Endianess: Undefined
Colorspace: RGB
Depth: 8-bit
Colormap: 256
0: ( 0, 0, 0) #000000 black
1: ( 1, 1, 1) #010101 rgb(1,1,1)
2: ( 2, 2, 2) #020202 rgb(2,2,2)
3: ( 3, 3, 3) #030303 grey1
4: ( 4, 4, 4) #040404 rgb(4,4,4)
5: ( 5, 5, 5) #050505 grey2
6: ( 6, 6, 6) #060606 rgb(6,6,6)
7: ( 7, 7, 7) #070707 rgb(7,7,7)
...
Image: IMG00006341_palette.bmp
Format: BMP (Microsoft Windows bitmap image)
Class: PseudoClass
Geometry: 324x423+0+0
Resolution: 196.85x196.85
Print size: 1.64592x2.14884
Units: PixelsPerCentimeter
Type: Grayscale
Base type: Grayscale
Endianess: Undefined
Colorspace: RGB
Depth: 8-bit
Colormap: 256
0: ( 12, 12, 12) #0C0C0C rgb(12,12,12)
1: ( 13, 13, 13) #0D0D0D grey5
2: ( 14, 14, 14) #0E0E0E rgb(14,14,14)
3: ( 15, 15, 15) #0F0F0F grey6
4: ( 16, 16, 16) #101010 rgb(16,16,16)
5: ( 17, 17, 17) #111111 rgb(17,17,17)
6: ( 18, 18, 18) #121212 grey7
7: ( 19, 19, 19) #131313 rgb(19,19,19)
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