Legacy ImageMagick Discussions Archive

There is a nice app on my Android phone called OfficeLens. It allows you to compose a picture of a namecard or a sheet of paper, it detects the edges of the namecard/paper and automatically crops away the outside retaining just the internal of the card/paper when you snap the photo. It seems to corr...

Thanks snibgo, you're right. after a -strip, the webpage seems to display the proper crop.

It's good to know. The photo was originally taken by my DSLR. I didn't know it embeds a copy of the big photo as a thumbnail.

I have used IM to crop a photo to passport photo dimensions and uploaded it to a website needing my photo. At first, the photo looks fine and the website accepts the photo, but when reviewing the application at the end, it is displaying a very low-resolution version of the original uncropped photo t...

I'm trying to generate an image that has negative numbers in it and take the FFT of that. I'm using an HDRI version of IM, but I'm not sure why the method I'm using is not producing negative numbers, or it's not fft'ing the negative numbers correctly. This is how I'm doing it: first I create a canva...

Hi all, I'm still working with kernels trying to identify circular structures within an image. Basically, I want to identify the best position and size of circles in an image. I am creating a set of circular kernels of different radii, that I convolve with the image and locate the peaks. The one wit...

I had an "old" version of IM on my HDD that I saved before reinstalling the OS. It was 6.8.0 (not really that old). I went back to that directory, re-compiled and installed (I had to do ldconfig /usr/local/lib again) and this version seems to work now. I'm not sure what is exactly the prob...

The new HDRI convert program is able to pass some of the basic tests, such as convert logo: logo.jpg. It even can convert logo.jpg to logo.png, so it doesn't seem to be a problem with convert exactly. However, for some reason, it is not able to convert my particular image although I'm able to view i...

BTW, the convert command in the utilities sub directory is producing the same error. I recently upgraded to LM 14, in my previous version (LM 12) it was working when I ran it from the utilities directory.

Anyone have some suggestion on what to try next?

Thanks

Thanks for the advise, but after $ sudo make clean $ ./configure --enable-hdri $ make $ sudo make install $ convert 015817.jpg 015817.png still produces the same error as above. Incidentally, if I run $ convert --version in the same window that I did the configure, make and make install, for some re...

I've compiled IM from source on LinuxMint 14.0 as I want to include the HDRI (for the fft). I'm following the instructions from http://magick.imagemagick.org/script/install-source.php#unix and http://magick.imagemagick.org/script/advanced-unix-installation.php IM is already installed on my system (w...

I'm using LinuxMint 14.0 and I had to apt-get a few extra magickwand libraries such as: libmagickwand-dev libmagickwand5 libmagickcore5 to get it to compile. I'm compiling the logo_1.c example from here: http://members.shaw.ca/el.supremo/MagickWand/ This is the code: #include<stdio.h> #include<stdli...

I am using imagemagick to do some basic image processing. Basically identifying these circular features as shown here: original image: http://i1067.photobucket.com/albums/u437/chah9/016216_original.png characterized: http://i1067.photobucket.com/albums/u437/chah9/016216_post.png In the above image, ...

Hi fmw42, I'm not sure why, but in my version of IM, I need to preface with miff: It doesn't create a proper .mif file without it. I'm using a version which I compiled myself with HDRI, if that makes a difference. After tinkering, I've managed to get it to work. For anyone else who might be interest...

Thanks for the link fmw, I've already been using a lot of the info from your page. I'm wanting to FFT a lot images and convolve with a lot of kernels. So I'm trying to FFT my images (both the image and the kernel) and save the FFT'd version to a miff: file. I pre-divide by the mean in the kernels be...

Thanks fmw42.

-alpha off gets the convolution to work and thanks also for the tip on using +write instead of -write and the info on the phase and adding the gray.