Search found 1015 matches
- 2012-02-08T08:32:19-07:00
- Forum: MagickWand
- Topic: ConvertImageCommand() and Obj-C
- Replies: 7
- Views: 29417
Re: ConvertImageCommand() and Obj-C
The problem is that tmp3, tmp4, tmp5 and tmp6 contain multiple arguments which must be in individual strings. Even a parenthesis is a separate argument. So where you have char *argv2[] = { "convert", tmp3, tmp4, tmp5, tmp6, It should be: char *argv2[] = { "convert", "("...
- 2012-02-07T20:25:18-07:00
- Forum: MagickWand
- Topic: ConvertImageCommand() and Obj-C
- Replies: 7
- Views: 29417
Re: ConvertImageCommand() and Obj-C
1. -size parameter "${w1}x1". If value of w1 is 480 (for example) could this be translated to "480x1"? Yes. 2. zz=$fd1*(i-$cx)*$cosang. Should I define "i"? In effect what happens here is that IM executes the -fx argument for each value of i from zero up to the width o...
- 2012-02-07T08:21:22-07:00
- Forum: MagickWand
- Topic: ConvertImageCommand() and Obj-C
- Replies: 7
- Views: 29417
Re: ConvertImageCommand() and Obj-C
xc: is the built-in image function which creates a canvas. If no size is specified, as in this case, then the image will be a single pixel. But the first nine statements aren't really using xc: at all. They are using the fx: feature to calculate values which will be used in the final convert stateme...
- 2012-02-05T08:20:05-07:00
- Forum: Users
- Topic: How to combine these commands into one?
- Replies: 4
- Views: 10034
Re: How to combine these commands into one?
You are missing \) just before -compose.
Pete
Pete
- 2012-02-02T13:58:52-07:00
- Forum: Magick++
- Topic: translating a command line to magick++ concerning pattern
- Replies: 7
- Views: 26048
Re: translating a command line to magick++ concerning patter
The basic pattern:checkerboard is designed to be tiled. But when you tile that image onto a 640x480 canvas, the result is not necessarily an image that can also be tiled. The left edge and the right edge of checkerboard.png don't match properly when tiled. I'm not familair with Magick++ so I can't h...
- 2012-02-01T08:52:31-07:00
- Forum: Magick++
- Topic: translating a command line to magick++ concerning pattern
- Replies: 7
- Views: 26048
Re: translating a command line to magick++ concerning patter
Both of these are in C but you should be able to figure out how to do the same thing in Magick++ See the last piece of code posted by user "fisheggs" in this thread: http://www.imagemagick.org/discourse-server/viewtopic.php?f=2&t=9346 And in my "MagickWand Examples in C", see...
- 2012-01-27T07:41:10-07:00
- Forum: Users
- Topic: Using PixelSetColor()
- Replies: 2
- Views: 6503
Re: Using PixelSetColor()
The problem is that you have to pass "rgb(a,b,c)" as a string so anything inside the string is not interpreted as variables. But you could use sprintf to create the string and then pass that. e.g. char rgb_string[64]; . . . sprintf(rgb_string,"rgb(%d,%d,%d)",a,b,c); PixelSetColor...
- 2012-01-16T15:37:33-07:00
- Forum: Users
- Topic: Adding copyright metadata to image?
- Replies: 2
- Views: 16189
Re: Adding copyright metadata to image?
IM will decompress the JPG data on input and then recompresss on output, which can degrade the image. You would be better off using a program which only alters the metadata. I forget the names - jhead is one I think?
Pete
Pete
- 2012-01-12T09:19:15-07:00
- Forum: IMagick
- Topic: DPI changing issue
- Replies: 1
- Views: 8320
Re: DPI changing issue
What is the format of the input image and how do you know it is 300dpi?
Pete
Pete
- 2012-01-08T12:33:16-07:00
- Forum: Users
- Topic: error LNK2019: unresolved external symbol ConstituteImage
- Replies: 2
- Views: 8335
Re: error LNK2019: unresolved external symbol ConstituteImag
The usual (and best) advice in this situation is that you first open the button demo project and make sure it compiles and runs as-is.
Then you can modify that code.
Pete
Then you can modify that code.
Pete
- 2012-01-07T20:49:39-07:00
- Forum: Users
- Topic: Problems linking ImageMagic.h, syntax error: ssize_t
- Replies: 4
- Views: 11181
Re: Problems linking ImageMagic.h, syntax error: ssize_t
Try each of these.
For C programs which use MagickWand I use this:
#include <wand/magick_wand.h>
A C program using MagickCore would use:
#include <magick/MagickCore.h>
The button demo for Magick++ uses:
#include <Magick++.h>
Pete
For C programs which use MagickWand I use this:
#include <wand/magick_wand.h>
A C program using MagickCore would use:
#include <magick/MagickCore.h>
The button demo for Magick++ uses:
#include <Magick++.h>
Pete
- 2011-12-18T19:24:19-07:00
- Forum: MagickWand
- Topic: Create several thumbnails from a single original image
- Replies: 2
- Views: 14813
Re: Create several thumbnails from a single original image
If you want 300x200 and 150x100 you can create the 300x200 first, write it, and then just cut the image in half and write that. If you want to (or have to) start from the original image each time, use CloneMagickWand to create a copy of the original wand. e.g. do something like this pseudo-code: ima...
- 2011-12-12T14:21:01-07:00
- Forum: Users
- Topic: I don't understand the different result with convert & crop
- Replies: 2
- Views: 6327
Re: I don't understand the different result with convert & c
The problem with the trim is that there are white spots on the scanned image which are too white to be covered by a fuzz of even 70%. You could try an even higher fuzz but that might then start cutting into the images. You could also try really cleaning the scanning surface to see if you can get rid...
- 2011-12-08T09:27:58-07:00
- Forum: Users
- Topic: Draw circle dithering
- Replies: 3
- Views: 8263
Re: Draw circle dithering
Turn off antialiasing - but it won't look as good:
convert testsave.png -stroke blue -fill blue -strokewidth 2 +antialias -draw "circle 20,20 20,25" test.png
Pete
convert testsave.png -stroke blue -fill blue -strokewidth 2 +antialias -draw "circle 20,20 20,25" test.png
Pete
- 2011-12-07T13:07:18-07:00
- Forum: Users
- Topic: pdf to tif:poor resolution
- Replies: 2
- Views: 6741
Re: pdf to tif:poor resolution
Specify a density (dpi) for the PDF before reading it.
Pete
Code: Select all
convert -density 300 toto.pdf -monochrome toto.tif