The convert utility which is a part of imagemagick will do what you need. Basic command line is:
Code:
convert +append image1.jpg image2.jpg product.jpg
The two images are placed side by side; use -append for a 'top to bottom' arrangement. With this you can easily write a script to process all of the files.
How do I put wallpaper from the internet on the Unix desktop? For example, I want to know how to perform the same operation as "right click-> Set as Wallpaper" on a graphics on a web page, in Windows.
Thanks! :rolleyes: (3 Replies)
I need to separate Pascal style identifiers (TheyLookLikeThis) into words separated by an underscore (_).
I've tried sed 's//&_&/' but this won't work (obviously). I'd love some help. (4 Replies)
Hello, I was just reading around these forums when I had an idea, without being able to really answer my question for myself due to some circumstances, so hopefully someone can give me a hand. I have an old desktop PC that has served me very well. I got an Asus G73JH though, so I mostly used the... (2 Replies)
I want to make a program where you have to insert binary numbers like this:
do
{
iBinary = getche();
}while(iBinary == 1 || iBinary == 0);
after you get the numbers I want them to be placed behind eachother so you will get:
input:
1
1
0
1
output:
1101 (7 Replies)
Good afternoon,
I have been searching the web, and these forums for help. I will try my best to explain the issue, and what my desired results are.
I am doing queries in MYSQL, and need the output to be sent to a file. That file needs to have things with the same ID on the same line. To... (14 Replies)
Hello ,
I am searching a directory for a file and have to assign the filename to a variable .
The variable must have form $$filename
So my code is
echo "'$$filename='`ls -lrt *PreMatch*.csv| head -1 | nawk '{print $9}'`"
however $$ is converting to a number .
How could I make it $$... (3 Replies)
I already manage to get the output that i want.. but wat if removing all the pipes and convert it 1 liner with less pipes. My command below can get the ouput that i want. i just want to remove the pipes or less pipes.
#cat file1
us-west-2a running i-3397a421... (2 Replies)
Ultimately, I'm looking to create a script that allows me to plug in a usb drive with lots of jpegs on it & copy them over to a folder on my hard drive. So in the process of copying I am looking to hash check them, record dupes to a file, copy only 1 of the identical files (if it doesn't exsist... (1 Reply)
What are the steps you need to take when you put an old HD in a new computer? I just did this. Every time it makes it to the windows boot screen then restarts. I have a bunch of old engineering software that is not compatible with the newer versions of windows. I figured this out after I bought... (6 Replies)
Discussion started by: cokedude
6 Replies
LEARN ABOUT SUSE
idiff
IDIFF(1) General Commands Manual IDIFF(1)NAME
idiff - compare two images
SYNOPSIS
idiff [options] image1 image2
DESCRIPTION
The idiff utility is invoked as follows:
idiff [options] image1 image2
Where input1 and input2 are the names of two image files that should be compared. They may be of any format recognized by OpenImageIO
(i.e., for which image-reading plugins are available).
If the two input images are not the same resolutions, or do not have the same number of channels, the comparison will return FAILURE imme-
diately and will not attempt to compare the pixels of the two images. If they are the same dimensions, the pixels of the two images will be
compared, and a report will be printed including the mean and maximum error, how many pixels were above the warning and failure thresholds,
and whether the result is PASS, WARNING, or FAILURE. For example:
$ idiff a.jpg b.jpg
Comparing "a.jpg" and "b.jpg"
Mean error = 0.00450079
RMS error = 0.00764215
Peak SNR = 42.3357
Max error = 0.254902 @ (700, 222, B)
574062 pixels (82.1%) over 1e-06
574062 pixels (82.1%) over 1e-06
FAILURE
The "mean error" is the average difference (per channel, per pixel). The "max error" is the largest difference in any pixel channel, and
will point out on which pixel and channel it was found. It will also give a count of how many pixels were above the warning and failure
thresholds.
The metadata of the two images (e.g., the comments) are not currently compared; only differences in pixel values are taken into considera-
tion.
For a complete description, see /usr/share/doc/libopenimageio-dev/openimageio.pdf.gz.
OPTIONS --help Print help message
-v Verbose status messages
-a Compare all subimages/miplevels
Thresholding and comparison options
-fail %g
Failure threshold difference (0.000001)
-failpercent %g
Allow this percentage of failures (0)
-hardfail %g
Fail if any one pixel exceeds this error (infinity)
-warn %g
Warning threshold difference (0.00001)
-warnpercent %g
Allow this percentage of warnings (0)
-hardwarn %g
Warn if any one pixel exceeds this error (infinity)
-p Perform perceptual (rather than numeric) comparison
Difference image options
-o %s Output difference image
-od Output image only if nonzero difference
-abs Output image of absolute value, not signed difference
-scale %g
Scale the output image by this factor
SEE ALSO iconvert(1), igrep(1), iinfo(1), iprocess(1), iv(1), maketx(1), oiiotool(1).
AUTHOR
OpenImageIO was written by Larry Gritz and the other authors and contributors.
This manual page was written by IRIE Shinsuke <irieshinsuke@yahoo.co.jp>, for the Debian project (and may be used by others).
May 19, 2012 IDIFF(1)