Using modulate on part of an image

[jaconat]

Hi,

New to ImageMagick so bear with me. I am using the convert command (see below) to overlay a picture on a background image, resize it, add some text and a white border around the picture. However I want to lighten the picture that I am overlaying. I have played about with the -modulate switch but it only ever lightens the entire image. Is it possible to do it in a single command or will I need to do it in 2 steps (not ideal as I don't really want to duplicate or modify the original image)?

So, my line is

Code: Select all

convert 'background.png' \
picture.jpg'[600x450]' -geometry +116+76 -modulate 120 -composite \
-fill none -stroke white -strokewidth 10 \
-draw "roundrectangle 116,76 716,526 12,12" \
-fill white -stroke none -strokewidth 0 -weight normal -style normal \
-font freakturbulance -gravity northwest -pointsize 20 \
-draw "text 90,580 'Name'" \
-font freakturbulance -gravity northeast -pointsize 35 \
-draw "text 90,570 'Joseph'" \
'newimage.png'

Ideally I want the line....

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picture.jpg'[600x450]' -geometry +116+76 -modulate 120 -composite

processed independently before being overlayed onto the background image.

Thanks

[snibgo]

Have you tried:

\( picture.jpg'[600x450]' -geometry +116+76 -modulate 120 \) -composite

?

[fmw42]

Have you tried:

\( picture.jpg'[600x450]' -geometry +116+76 -modulate 120 \) -composite

?

[600x450] is not a valid subsection as far as I know. You must specify the offsets as well

[WidthxHeight+Xoffset+Yoffset]

e.g.

[600x450+0+0]

for the top left subsection

[magick]

Try the -region option. It applies an option to only a region of your image (instead of the whole image).

[jaconat]

Tried using the brackets as suggested by snibgo but got the error

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./myscript.sh: line 6: syntax error near unexpected token `('
./myscript.sh: line 6: (`picture.jpg'[570x760]' -geometry +90+73 -modulate 160) -composite \'

Tried brackets in a simpler script but got the same syntax error. Is this right? I'm using Ubuntu 9.04. Don't expect so but do I need to enable brackets ? Any suggestions?

Thanks for the -region switch Magick. I'll give that a try next.

[jaconat]

Thanks Magick, the -region switch worked. Added the line

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-region 600x450+116+76 -modulate 120,120 -region 100%

between lines 2 & 3 on the original code.