ImageMagick: How to thicken lines
I'm trying to thicken lines with imagemagick. There is a description about how to do this here, but when I do it on my sample images they just stay the same or get rather weaker.
Examples given from imagemagick (that do not make lines thicker when I try):
convert man.gif -morphology Thicken '3x1+2+0:1,0,0' thick_right.gif
convert man_line.gif -morphology Thicken ConvexHull thick_line.gif
- Does anyone know how to make the lines (or shapes) thicker/bolder?
- also: how does the "command" '3x1+2+0:1,0,0' work?
imagemagick image-manipulation
asked Jul 30 '16 at 4:33
tokoshtokosh
1315
add a comment |
I'm trying to thicken lines with imagemagick. There is a description about how to do this here, but when I do it on my sample images they just stay the same or get rather weaker.
Examples given from imagemagick (that do not make lines thicker when I try):
convert man.gif -morphology Thicken '3x1+2+0:1,0,0' thick_right.gif
convert man_line.gif -morphology Thicken ConvexHull thick_line.gif
- Does anyone know how to make the lines (or shapes) thicker/bolder?
- also: how does the "command" '3x1+2+0:1,0,0' work?
imagemagick image-manipulation
asked Jul 30 '16 at 4:33
tokoshtokosh
1315
add a comment |
I'm trying to thicken lines with imagemagick. There is a description about how to do this here, but when I do it on my sample images they just stay the same or get rather weaker.
Examples given from imagemagick (that do not make lines thicker when I try):
convert man.gif -morphology Thicken '3x1+2+0:1,0,0' thick_right.gif
convert man_line.gif -morphology Thicken ConvexHull thick_line.gif
- Does anyone know how to make the lines (or shapes) thicker/bolder?
- also: how does the "command" '3x1+2+0:1,0,0' work?
imagemagick image-manipulation
asked Jul 30 '16 at 4:33
tokoshtokosh
1315
I'm trying to thicken lines with imagemagick. There is a description about how to do this here, but when I do it on my sample images they just stay the same or get rather weaker.
Examples given from imagemagick (that do not make lines thicker when I try):
convert man.gif -morphology Thicken '3x1+2+0:1,0,0' thick_right.gif
convert man_line.gif -morphology Thicken ConvexHull thick_line.gif
- Does anyone know how to make the lines (or shapes) thicker/bolder?
- also: how does the "command" '3x1+2+0:1,0,0' work?
imagemagick image-manipulation
imagemagick image-manipulation
asked Jul 30 '16 at 4:33
tokoshtokosh
1315
asked Jul 30 '16 at 4:33
tokoshtokosh
1315
asked Jul 30 '16 at 4:33
tokoshtokosh
1315
asked Jul 30 '16 at 4:33
tokoshtokosh
1315
asked Jul 30 '16 at 4:33
tokoshtokosh
1315
1315
add a comment |
add a comment |
1 Answer
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It seems these "morphology"s are were made having a black background as a basis. Once the image is white-on-black, the transformation works. From the documentation:
It was original developed with binary (pure black and white) images in
mind
Negate the colors (so that I have white on black):
convert black-on-white.png -negate white-on-black.png
Then do above transformation from the question. However, I had better results with following morphology:
convert white-on-black.png -morphology Dilate Octagon fat-white-on-black.png
Still, nice to have would be to have it work from different color schemes.
answered Jul 30 '16 at 7:56
tokoshtokosh
1315
2
The article also says * 'Dilate' and 'Erode' are dual*, so you can operate on your original image with-morphology Erode Octagon.
– meuh
Jul 30 '16 at 8:59
add a comment |
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1 Answer
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1 Answer
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active
oldest
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active
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votes
It seems these "morphology"s are were made having a black background as a basis. Once the image is white-on-black, the transformation works. From the documentation:
It was original developed with binary (pure black and white) images in
mind
Negate the colors (so that I have white on black):
convert black-on-white.png -negate white-on-black.png
Then do above transformation from the question. However, I had better results with following morphology:
convert white-on-black.png -morphology Dilate Octagon fat-white-on-black.png
Still, nice to have would be to have it work from different color schemes.
answered Jul 30 '16 at 7:56
tokoshtokosh
1315
2
The article also says * 'Dilate' and 'Erode' are dual*, so you can operate on your original image with-morphology Erode Octagon.
– meuh
Jul 30 '16 at 8:59
add a comment |
It seems these "morphology"s are were made having a black background as a basis. Once the image is white-on-black, the transformation works. From the documentation:
It was original developed with binary (pure black and white) images in
mind
Negate the colors (so that I have white on black):
convert black-on-white.png -negate white-on-black.png
Then do above transformation from the question. However, I had better results with following morphology:
convert white-on-black.png -morphology Dilate Octagon fat-white-on-black.png
Still, nice to have would be to have it work from different color schemes.
answered Jul 30 '16 at 7:56
tokoshtokosh
1315
2
The article also says * 'Dilate' and 'Erode' are dual*, so you can operate on your original image with-morphology Erode Octagon.
– meuh
Jul 30 '16 at 8:59
add a comment |
It seems these "morphology"s are were made having a black background as a basis. Once the image is white-on-black, the transformation works. From the documentation:
It was original developed with binary (pure black and white) images in
mind
Negate the colors (so that I have white on black):
convert black-on-white.png -negate white-on-black.png
Then do above transformation from the question. However, I had better results with following morphology:
convert white-on-black.png -morphology Dilate Octagon fat-white-on-black.png
Still, nice to have would be to have it work from different color schemes.
answered Jul 30 '16 at 7:56
tokoshtokosh
1315
It seems these "morphology"s are were made having a black background as a basis. Once the image is white-on-black, the transformation works. From the documentation:
It was original developed with binary (pure black and white) images in
mind
Negate the colors (so that I have white on black):
convert black-on-white.png -negate white-on-black.png
Then do above transformation from the question. However, I had better results with following morphology:
convert white-on-black.png -morphology Dilate Octagon fat-white-on-black.png
Still, nice to have would be to have it work from different color schemes.
answered Jul 30 '16 at 7:56
tokoshtokosh
1315
answered Jul 30 '16 at 7:56
tokoshtokosh
1315
answered Jul 30 '16 at 7:56
tokoshtokosh
1315
answered Jul 30 '16 at 7:56
tokoshtokosh
1315
1315
2
The article also says * 'Dilate' and 'Erode' are dual*, so you can operate on your original image with-morphology Erode Octagon.
– meuh
Jul 30 '16 at 8:59
add a comment |
2
The article also says * 'Dilate' and 'Erode' are dual*, so you can operate on your original image with-morphology Erode Octagon.
– meuh
Jul 30 '16 at 8:59
2
2
The article also says * 'Dilate' and 'Erode' are dual*, so you can operate on your original image with
-morphology Erode Octagon .– meuh
Jul 30 '16 at 8:59
The article also says * 'Dilate' and 'Erode' are dual*, so you can operate on your original image with
-morphology Erode Octagon .– meuh
Jul 30 '16 at 8:59
add a comment |
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