it seems to me that it does not invert when the first pixel is black...
convert input.png -size 1x1 -fill black -draw "point 0,0" -depth 1 -define png:color-type=3 output.png
works perfectly without any negation
Search found 2 matches
- 2015-06-06T00:28:46-07:00
- Forum: Bugs
- Topic: indexed 1-bit png is negated
- Replies: 3
- Views: 3651
- 2015-06-05T13:41:11-07:00
- Forum: Bugs
- Topic: indexed 1-bit png is negated
- Replies: 3
- Views: 3651
indexed 1-bit png is negated
Dear All,
If I run (on Windows 7 / ImageMagick 6.9.1-3 Q16 x86 portable)
"convert input.png -depth 1 -define png:color-type=3 output01.png" and
"convert input.png -depth 1 -negate -define png:color-type=3 output02.png"
I get two images that look the same (in my case input.png is already 1-bit ...
If I run (on Windows 7 / ImageMagick 6.9.1-3 Q16 x86 portable)
"convert input.png -depth 1 -define png:color-type=3 output01.png" and
"convert input.png -depth 1 -negate -define png:color-type=3 output02.png"
I get two images that look the same (in my case input.png is already 1-bit ...