Legacy ImageMagick Discussions Archive

expected below effect（both emboss and deboss）

tried fred's 'emboss' script, but still can't get the deboss effect for the file I have below：

the file I have

For emboss use:

emboss -a 135 input2.png miff:- | convert - -background "#BEBEBE" -flatten emboss_a135.png

For deboss add 180 deg:

Code: Select all

emboss -a 315 input2.png miff:- | convert - -background "#BEBEBE" -flatten emboss_a315.png

fmw42 wrote: ↑2019-08-01T13:22:12-07:00 For emboss use:
Code: Select all
emboss -a 135 input2.png miff:- | convert - -background "#BEBEBE" -flatten emboss_a135.png
For deboss add 180 deg:
Code: Select all
emboss -a 315 input2.png miff:- | convert - -background "#BEBEBE" -flatten emboss_a315.png

fmw42,
It works for the above image. However if the image is like below, there is no deboss effect. The code was not working.
image:

Not work some images which look too "flat" , without "stroke".

Your image does not show for me. Access Denied. Please post so that others can access it.

fmw42 wrote: ↑2019-08-13T09:52:10-07:00 Your image does not show for me. Access Denied. Please post so that others can access it.

It is OK now.

The image you provided does not have a transparent background. That is needed for that command. It also must be white on a transparent background.

Code: Select all

convert text.png -negate -fuzz 50% -transparent black text2.png
emboss -a 315 text2.png miff:- | convert - -background "#BEBEBE" -flatten result.png

But the text font and size make it too narrow and won't show the effect very well.

fmw42 wrote: ↑2019-08-13T18:15:16-07:00 The image you provided does not have a transparent background. That is needed for that command. It also must be white on a transparent background.
But the text font and size make it too narrow and won't show the effect very well.

fmw42,
Want to process 3 input files using the one piece of code, to have the 'deboss' effect and transparent background for each of the input images.
for example, expected output for third input image(deboss, and transparent background)

However, I can not got the expected output images, using the below code. Seems like I got the opposite effect: 'emboss' effect for the thrid image. While can't remove background for the second input image.

Code: Select all

convert text.png -negate -fuzz 50% -transparent transparent text2.png

./emboss.sh -a 315 text2.png miff:- | convert - -background transparent -flatten result.png

convert result.png \
\( -clone 0 -alpha extract -morphology dilate diamond:1 -write mpr:alpha +delete \) \
texture.png -compose multiply -composite \
mpr:alpha -alpha off -compose copy_opacity -composite \
-matte    -virtual-pixel transparent \
result-2.png

The first input image(png with transparent background, ignore the noise on background)

The second input image (same as first image, but have white background)

The third input image

The texture image I used

You cannot use the same code for all the images. The first line of code was only for black text on a white background. It has a negate in it. That will mess up the third image, which is already white on transparent background. The transparent white will also mess it up, since it already is white and the white may go to transparent.

Your first line of code is malformed with two transparent in it.

convert text.png -negate -fuzz 50% -transparent transparent text2.png

It should be

Code: Select all

convert text.png -negate -fuzz 50% -transparent black text2.png

And was only intended for black text on a white background.

fmw42 wrote: ↑2019-08-14T13:01:59-07:00 You cannot use the same code for all the images. The first line of code was only for black text on a white background. It has a negate in it. That will mess up the third image, which is already white on transparent background. The transparent white will also mess it up, since it already is white and the white may go to transparent.

Your first line of code is malformed with two transparent in it.

convert text.png -negate -fuzz 50% -transparent transparent text2.png
It should be
Code: Select all
convert text.png -negate -fuzz 50% -transparent black text2.png
And was only intended for black text on a white background.

fmw42,
I removed the image with white background. Below I have four images which all have transparent background. I used the code shown here, however, still cannot get the 'deboss effect'. Looks like only works for input2.png...
Just want to have a code to batch process the images like these.

input image 1:

input image 2:

input image 3:

input image 4:

texture image:
same as the above post

code:

Code: Select all

./emboss.sh -a 315 input.png miff:- | convert - -background transparent -flatten result.png

convert result.png \
\( -clone 0 -alpha extract -morphology dilate diamond:1 -write mpr:alpha +delete \) \
texture.png -compose multiply -composite \
mpr:alpha -alpha off -compose copy_opacity -composite \
-matte    -virtual-pixel transparent \
result-2.png

ie. expected output of input image 3

I do not think my script will work well for you. Sorry.

Try this using the other mode in my emboss script. The first line extracts the alpha channel from your second example image, since the script needs the image to be processed to be black and white. The image must have an alpha channel that is not fully opaque and corresponds appropriately to the image such that its background is transparent.

Code: Select all

convert input1.png -alpha extract alpha.png

emboss -m 2 -d 3 -a 90 -i 30 alpha.png  miff:- |\
convert - \( alpha.png -morphology dilate disk:3 \) \
-alpha off -compose copy_opacity -composite \
result.png

You can adjust -d, -i and disk:x to suit your situation.

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