How to create round corner and drop shadow by convert?

[waveletboy]

How to create round corner and drop shadow? I tried but the speed is very slow on creating shadow. Gaussian blur cost too much time. Thanks!
http://picasaweb.google.com/waveletboy/ ... 7339123554

[fmw42]

It might be nice if you gave us some information about what your command line is like?

Have you tried -shadow

http://www.imagemagick.org/Usage/convolve/#shadow

[waveletboy]

I need three steps to create such picture.

convert -size 800x600 xc:none -draw "roundRectangle 0,0 800,600 15,15" -fill white input.JPG -compose SrcIn -composite +compress inter_001.png
convert inter_001.png ( +clone -background black -shadow 80x5+8+8 ) +swap -background none -layers merge +repage +compress inter_002.png
convert -size 830x630 xc:white -draw "image Over 6,6, 0,0 'inter_002.png'" +compress final.png

Is it possible to do it with one line? Thanks.

It might be nice if you gave us some information about what your command line is like?

Have you tried -shadow

http://www.imagemagick.org/Usage/convolve/#shadow

[fockjef]

Code: Select all

convert <input file> \
-fill none -draw "matte 0,0 reset" \
-tile <input file> \
-draw "roundRectangle -1,-1 <width>,<height> 30,30" \
( +clone -background black -shadow 80x5+10+10 ) \
+swap -background none -layers merge \
+repage <output file>

[waveletboy]

You are magic!

Code: Select all

convert <input file> \
-fill none -draw "matte 0,0 reset" \
-tile <input file> \
-draw "roundRectangle -1,-1 <width>,<height> 30,30" \
( +clone -background black -shadow 80x5+10+10 ) \
+swap -background none -layers merge \
+repage <output file>

[Lukas1234]

I just tested this to see is it working and for some reason i getting black box.Any idea why?

[pinstripe]

I am also getting a black box. Anyone have any ideas why? I have JPEG, JPEG-2000, PNG, and TIFF support.

[pinstripe]

Apparently this only happens on JPEGs. It works fine to add shadows to PNGs, but those aren't that web-friendly. Converting the PNG back to the JPEG also results in the bad drop shadow. Any thoughts?

[pinstripe]

The solution is this:

Code: Select all

convert <file>.jpg \( +clone -background black -shadow 60x5+10+10 \) +swap -background white -layers merge +repage <output>.jpg

Notice I changed "-background none" to "-background white." Because JPEGs don't have transparency, the transparent portions get converted to black if the background is set to none. If you have "-background white," it'll flatten the transparency into the white background, producing the correct result.

[anthony]

The "RoundedRectangle" solution is an early solution for generating anti-aliased rounded corners on images. But as you knwo you need at least one pass first to get the image size.

A different solution generates the masking image by drawing a small corner and flip/flopping it around.

See IM Examples, Thumbnails, Rounded Corners...
http://www.imagemagick.org/Usage/thumbnails/#rounded

You can add to that command with the shadowing stuff and do BOTH image processing sequences (corners and shaodwing) in the one convert command.

[anthony]

What OS are you using?

What version of IM are you using?

what errors do you get?

What image are you trying?

[maitrebart]

The solution is this:

Code: Select all

convert <file>.jpg \( +clone -background black -shadow 60x5+10+10 \) +swap -background white -layers merge +repage <output>.jpg

Notice I changed "-background none" to "-background white." Because JPEGs don't have transparency, the transparent portions get converted to black if the background is set to none. If you have "-background white," it'll flatten the transparency into the white background, producing the correct result.

Would anyone know how to do the same but with a background image instead of having a white background?

I tried:

Code: Select all

convert <file>.jpg \( +clone -background black -shadow 60x5+10+10 \) +swap -texture mytexture.gif -layers merge +repage <output>.jpg

but it wouldn't work: the whole background is black. In fact I tried different combinations of -background and -texture within the command line without any success.

If possible, I would prefer the image (and its shadow) not to begin at the top left corner but be offset by few pixels (e.g. +5+5).

[fmw42]

try this using the IM internal images netscape: and logo:

infile1="netscape:"
infile2="logo:"
ww=`convert $infile1 -ping -format "%w" info:`
hh=`convert $infile1 -ping -format "%h" info:`
wwm1=`convert xc: -format "%[fx:$ww-1]" info:`
hhm1=`convert xc: -format "%[fx:$hh-1]" info:`
convert $infile1 \
\( +clone -threshold "100%" -fill white -draw "roundrectangle 1,1 $wwm1,$hhm1 25,25" \) \
-alpha off -compose CopyOpacity -composite \
-background none -compose Over -gravity center -extent ${ww}x${hh} \
\( +clone -background black -shadow 60x4+4+4 \) +swap \
-background none -flatten \
$infile2 +swap -gravity center -composite netscape_rounded_shadow_logo.png

first line after the 6 variables are defined is input image infile1=netscape
second line makes a black image from the netscape: and draws a white roundrectangle
third line puts the white and black roundrectange as the alpha channel of the netscape image
fourth line adds a black shadow
fifth line flattens (combines) the shadow with the rounded netscape
sixth line overlays the shadowed rounded netscape over the infile2=logo: image

[maitrebart]

try this using the IM internal images netscape: and logo: [...]

Thanks fmw42. Your script looks to work. However, when I replace the infile variables by actual files, I get the following errors:

Code: Select all

convert: unable to open image `../bkgd_photo.jpg': No such file or directory.
convert: no such image `p_cotegaspesie5s.jpg'.
convert: missing an image filename `netscape_rounded_shadow_logo.png'.

[Bonzo]

Post your code.

I pressume you are not adding : to your image name ? This is only for built in Image Magick images.