The has files converted by IM (latest version, command line) that show the RGB source file converted to grayscale. The easiest way to convert images to grayscale (graylevel) is by using ” imagemagick” the image manipulation programs suite. Use the. No idea why but identify seems to always assume sRGB. Your image should actually be grayscale. If you use the -verbose option it will report.

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Sign up using Email and Password. Example 1 Original Image.

This imagemagick command works most of the time: What I still need to do though is change the remaining grayscale portion to another color e. And I’m sorta the type of guy that creates effects just because I can. To mix the color channels from an image into a single grayscale image using a weighted combination. This example uses tiffs: Continue this conversation via email Get only replies to your comment, the best of the rest, as well as a daily recap of all comments on this post.

The image may also be converted to grayscale from the intensity-like channel of various colorspaces. For the bit-depth you need to explicitly set the imxgemagick and bit-depth for the PNG encoder by using -define. At least in newer versions of ImageMagick, it seems You’ll need to specify the desired colorspace along with the -fx command.


Arguments -f c -c sgray. So I guess imagemagick will have to do.


I will check again if it is still available, and if iamgemagick will suggest you how to patch the code to use it. When PS displays the converted image, it shows as a gray image.

Email Required, but never shown. But, I cannot get it working with 6.

Convert RGB to Grayscale in ImageMagick command-line – Stack Overflow

But the PhotoFlow rescaled image also is a fractional pixel off from the other resizing algorithms, which makes the difference blend a bit difficult to interpret. I took some incredible photos in London, Paris, and Jamaica, and tooks some really special photos of my son during his first few years.

Is something like this possible? An Imagemagick developer will need to respond to that and to the crash issue on newer versions of IM. I wonder if ImageMagick is multi-threaded… the photoflow script makes use of all the CPU cores you have available. Oh, and the texting, always the texting. Post as a guest Name. You can check using info: Sign imagematick or log in Sign up using Google. All they care about is the technology.

Home Questions Tags Users Unanswered. Post as a guest Name. FORM of combining channels. It makes up for the slowness by giving the user the option to define their own, or customize existing, filters on the fly if you know what you are doing. So I was hoping one of the pixls. I have put a preset that does what you describe above here. I thought the color management link would answer your question. Sorry I cannot tease out of our code a test executable to show the issue.


Convert an Image to Grayscale with ImageMagick

It may be reducing the alpha value too much too transparent. Your image graysccale actually be grayscale. Stack Overflow works best with JavaScript enabled. So thank you thank you! Thanks so much for your help! I get asked loads of questions every day but I’m always surprised that they’re rarely questions about code or even tech — many of the questions I get are more about non-dev stuff like what my office is likewhat software I use, and oftentimes Yes, there is no point in using find multiple times.

Image to get information from the file we are processing. Of course I can use Photoshop to convert the image to grayscale but that’s too much work. The weighted channels can be combined by simple addition or by root mean squared combination. To save imagemagicl space, convert the tiffs to 8-bits: Arguments imagemagck c -c hsb. OK, I had all of these things too. Well, I did read the link, until I got to this paragraph: