Search found 8887 matches

by anthony
2006-02-16T19:26:44-07:00
Forum: Users
Topic: convert exit always with exit status zero
Replies: 0
Views: 9954

Convert should return an exit of 0 whcih in UNIX terms means success when no error occured. It should only return a exit of 1 for major errors. For example a -crop of an image that missed the image will report that it missed as a warning, but this is NOT an error, so convert should still return a ex...
by anthony
2006-02-16T18:49:18-07:00
Forum: Users
Topic: Taking Screen Caps of a movie file.
Replies: 1
Views: 12519

The problem is that IM is using delegates who has no idea of frame number wanted. As such the deleget would need to convert the whole movie. You are better in this sort of processing to use the delegate directly to extract the frames, then use IM to process those images. IM is a image processor, not...
by anthony
2006-02-16T18:42:17-07:00
Forum: Users
Topic: JPEG differences
Replies: 1
Views: 11811

I can say with certainaty, Their is no way to be sure of the quality of any image from the internet. I have seen the same image shrunk down, then expanded, and transformed though multiple quaility settings by people who just do not understand anything about JPEG or general lossiness of image transfo...
by anthony
2006-02-16T18:27:20-07:00
Forum: Users
Topic: how to specify size of images in a composite
Replies: 3
Views: 19985

It seems that -geomtery is broken, but will be fixed on the next point release of IM v6.2.6-2 However we have finally decided what -geometry will do to match with the new commandline scheme. Unfortunatally it is such a unusual command it is BOTH a operator and a setting. As of the next point release...
by anthony
2006-02-14T23:11:48-07:00
Forum: Users
Topic: basic image question
Replies: 2
Views: 16739

Nope sorry.
by anthony
2006-02-14T21:59:43-07:00
Forum: Users
Topic: basic image question
Replies: 2
Views: 16739

Prehaps you should look though the IM examples.

to produce a negative use -negate
to make a mirror -flop

More distorts can be seen in the "distort" second of the IM examples.

You may be especially interesting in "thumbnails"
by anthony
2006-02-14T18:34:23-07:00
Forum: Users
Topic: How to emulate Photoshop's "Color" blend mode?
Replies: 4
Views: 20314

Not in composite. and -dissolve is only in composite. However their are other ways to make images semi-transparent. convert image1 -matte -fill '#00000080' -draw 'matte 0,0 reset' \ image2 -compose overlay -composite result_image The -fill sets a semi-transparent color and the "-draw color reset" re...
by anthony
2006-02-14T18:02:10-07:00
Forum: Users
Topic: How to emulate Photoshop's "Color" blend mode?
Replies: 4
Views: 20314

That is certainaly posible, (see -dissolve) though may not look as good. Overlaying images with the addition of transparency is handled by the -dissolve composite operator. Question did you try swapping the overlay images? Overlay does NOT operlay images equally. One is used to modify the colors of ...
by anthony
2006-02-14T17:26:10-07:00
Forum: Users
Topic: How to emulate Photoshop's "Color" blend mode?
Replies: 4
Views: 20314

Don't dismiss the first suggestion -blend
by anthony
2006-02-14T17:25:09-07:00
Forum: Users
Topic: Multi layer CYMK PSD to JPG RVB
Replies: 0
Views: 11643

CMYK had a lot of work done in later IM releases.

The first thing you should do is upgrade to the latest release.
Then try again.

Also look at the examples on -flatten at
http://www.cit.gu.edu.au/~anthony/graph ... s/#flatten
by anthony
2006-02-14T16:44:31-07:00
Forum: Users
Topic: basic image question
Replies: 2
Views: 16739

Re: basic image question

hello, whenever i got a image from webcam its having always width x height format with why width always>height??? Because that is what the web camera is generating. Even if the camera is rotated, the camare may note that it was rotates in EXIF meta data stored in the image, but the camera itself st...
by anthony
2006-02-14T16:35:24-07:00
Forum: Users
Topic: How to emulate Photoshop's "Color" blend mode?
Replies: 4
Views: 20314

Color blend is generally not overlay. The blend is implemented in IM as -blend. http://www.cit.gu.edu.au/~anthony/graphics/imagick6/compose/ This merges two images by picking a percentage of each image to do a sort of 'weighted average'. This is probably what Photoshop is doing. If this does not do ...
by anthony
2006-02-12T20:46:42-07:00
Forum: Users
Topic: How to ignore a 16-bit pseudocolour colourmap
Replies: 1
Views: 13933

If you want top access the pixel data, there are lots better formats than png.
Look at txt: xpm: and ppm: The latter can be made into a non-binary format
by filtering it with "pnmnoraw".
by anthony
2006-02-12T20:43:37-07:00
Forum: Users
Topic: converting a big image makes it truncated
Replies: 1
Views: 14709

More likely it is either a incomplete PNG file, or a problem with size limits for the PBM image formats.
by anthony
2006-02-12T20:41:56-07:00
Forum: Users
Topic: Drawing multiple images on the root window
Replies: 2
Views: 18143

It can be done. But not with image magick. What you need to do use use a X window programe that re-tiles the root window completely, then adds the extra image to that new background image. The "xli" is one such program is able to do this, once you discover the window ID for the root window. Another ...