Legacy ImageMagick Discussions Archive

The ImageMagick 6.3.5 07/22/2007 convert Mac OS X binary creates invalid TIFF files, that can not be read, nor displayed as TIFF images.
The ImageMagick 6.2.8 07/07/2006 convert Mac OS X binary creates valid TIFF files.

$ convert -version
Version: ImageMagick 6.3.5 07/22/07 Q16 http://www ...

Here is how to create from a three channel RGB input image, a single channel R only output image

convert imageIn_RGB.tif -channel R -separate imageOut_R.tif

Using an older version of ImageMagick, ImageMagick 6.2.8 07/07/06 Q8, for Mac OS X that still supports TIFF images I tried the suggested syntax

exec("/usr/local/bin/convert imageIn_RGB.tif -channel BG -fx 0 imageOut_R.tif");

but this syntax creates a three channel RGB image (not the desired one ...

Thanks. I see the logic behind that.
The problem now is that
identify -list format
indicates that the official ImageMagick for Mac OS X that I downloaded today can not read nor write any TIFF images. I must use TIFF, because all of my images are GeoTIFF images, which are TIFF images that includes ...

I had set DYLD_LIBRARY_PATH, and had set IMHOME, but not MAGICK_HOME. Sorry about that. Thanks for the help.
The good news is now when I do
identify -list format
I get a list of 152 formats that are supported.
But the bad news is that the TIFF format in not on the list of supported formats.
Has ...

The ImageMagick-6.3.2 for Mac OS X binary that I downloaded today from your official site as the file ImageMagick-universal-apple-darwin8.8.0.tar.gz seems to me to be useless, because identify says it can not read any raster image formats. Is there a Mac OS X binary version that can read and write ...

I need to create an output image that contains ONLY the Red channel of the input image.
The command below copies from the input image the Red, Green, and Blue channels to the output image.
I want to copy only the Red channel.

convert -channel R imageIn_RGB.tif imageOut_R.tif

I did identify -version and identify -list format and get
Version: ImageMagick 6.3.0 11/03/06 Q16 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2006 ImageMagick Studio LLC

Format Module Mode Description ...

What raster formats are supported in the official ImageMagick binary for Mac OS X? I see that in addition to TIF no longer being supported, PNG is also not supported. Is JPEG2000 supported? What raster formats are supported?

I am using the Mac OS X binary release of ImageMagick, downloaded today from this web site. While I can successfully start up identify, identify reports that it does not recognize the TIF image format. convert misbehaves in this same way.

identify -version
Version: ImageMagick 6.3.0 11/03/06 Q16 ...

Still looking for an example that works under Mac OS X for drawing text with ImageMagick.

I posted a similar message here on 11 July 2006 asking how to use ImageMagick under Mac OS X to draw text, and so far there has not been one response showing how to draw text with ImageMagick under Mac OS X. This is disappointing.

I work a lot with TIF and JPEG2000 images, and need to quantify the difference between the original TIF an an irreversible or lossy compressed JP2 image, and I use the GeoJasPer utility geoimgcmp to do that. I do not have any interest in looking at a difference image. Here is an example ...

Let's say I want to use the fixed width font Courier. Courier comes in 4 flavors, under Mac OS X.
Courier Regular
Courier Oblique
Courier Bold
Courier Bold Oblique
How do I tell ImageMagick which of these 4 flavors to use?

I would still like to see example syntax for using convert to draw text ...

compare says its -metric option can be used to measure differences between two images. But when I enter the compare command, it always claims the image is missing. What is the syntax for measuring the rmse difference between two images with compare?

Usage: compare [options ...] image reconstruct ...