openexr | OpenEXR project provides the specification and reference | Computer Vision library
kandi X-RAY | openexr Summary
kandi X-RAY | openexr Summary
OpenEXR is a project of the Academy Software Foundation. The format and library were originally developed by Industrial Light & Magic and first released in 2003. Weta Digital, Walt Disney Animation Studios, Sony Pictures Imageworks, Pixar Animation Studios, DreamWorks, and other studios, companies, and individuals have made contributions to the code base. OpenEXR is included in the VFX Reference Platform.
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QUESTION
I'm using ubuntu and have installed ImageMagick
...ANSWER
Answered 2022-Apr-07 at 15:06Convert writes its output to disk (result.jpg
). The output argument of exec()
if for any output to stdout. If you want the image data in$output
specify an output file of -
.
To quote the man page:
By default, the image format of 'file' is determined by its magic number. To specify a particular image format, precede the filename with an image format name and a colon (i.e. ps:image) or specify the image type as the filename suffix (i.e. image.ps). Specify 'file' as '-' for standard input or output.
QUESTION
I have a venv requirement text file that I used to create a virtual environment for pip.
I want to setup now an environment in conda, based on the requirement file for pip. However, there are few lines that I don't know how to "port" from pip to conda syntax. If I take lines like:
...ANSWER
Answered 2021-Oct-28 at 03:48Conda will know your platform already, so the first line keeps only the openexr
specification. For the second one, Conda manages Python, so that the Python version specification can be included explicitly on a separate line. Altogether, something like
QUESTION
I executed npm install
on gatsby js directory on Mac.
macOs is Big Sur
Version is 11.4.
gatsby version is 3.11.0
gatsby-plugin-sharp version is 3.11.0
this error log is shown.
...ANSWER
Answered 2021-Aug-09 at 10:37I installed OpenEXR. I resloved this error.
https://github.com/AcademySoftwareFoundation/openexr/blob/master/INSTALL.md
QUESTION
These operations works:
- HEIC to other formats, e.g. convert IMG_8293.HEIC c.jpg
These operations produce invalid output:
- convert any format to HEIC, e.g.: convert c.jpg c.heic
- rotate HEIC: convert IMG_8293.HEIC -rotate 90 IMG_8293.HEIC
- other HEIC operations, e.g. flip, flop, etc.
Invalid output means: the metadata are shown properly but MacOS preview complains: "The file “c.heic” could not be opened. It may be damaged or use a file format that Preview doesn’t recognise.
".
The metadata of the input file c.jpg
...ANSWER
Answered 2021-Jun-22 at 08:27Upgrade to latest 7.1.0 version solved the issue.
QUESTION
I try to build the OpenCV 4.5.1 SDK for Android because I need the SDK with contrib modules and the official release [1] only has the standard modules. But the libraries I build are almost 10x larger, for example: libopencv_core.a ==> 47.6 MB self compiled, 5.3 MB from the official repository (both for arm64-v8a)
Here is my cmake command, followed by ninja for compilation.
...ANSWER
Answered 2021-Mar-23 at 12:28I found the culprit:
QUESTION
When I run a specific ImageMagick convert command (to produce an animated GIF) inside a Singularity container it is consistently giving an memory error:
...ANSWER
Answered 2021-Feb-17 at 16:45The problem turned out to be with ImageMagick's system-wide policy.xml
that was installed in my container. Updating that file with more generous "memory" and "disk" values fixed this problem.
You can find the location of your system's policy.xml
file using the command convert -list policy
(Hat tip to Kurt Pfeifle's answer which clued me in on this). For me it was at /etc/ImageMagick-6/policy.xml
. You can edit that file
(if you have root access). In the end I decided just to delete the file since I don't want my system from restricting my use at all inside the container.
You can set limits via the command line, say convert -limit memory 2GiB ...
or environment variables (See Kurt Pfeifle's answer for details). However, this method does not allow expanding larger than system-wide limits set in policy.xml
because this policy file is meant to be a way for system administrators to forcibly limit users. Therefore, the only way to remedy this is to update/remove the system-wide policy.
QUESTION
I'm attempting to write a floating point PIL image object out to a channel in an EXR file using OpenEXR.
I can read EXR data into a PIL image fine:
...ANSWER
Answered 2021-Feb-10 at 03:55I got it working but don't understand it completely yet.
QUESTION
I am trying to get orb_slam2_ros to compile and it needed an OpenCV version higher than 2.3. I have 4.2.0 but it doesn't work but according to ROS, it has been tested to work on 2.4.11. Here is what I did:
- Download the source zip file.
- Extract it.
- Go into the directory and create a build folder.
- Go into the build folder and run
cmake ..
. There is gives me this:
ANSWER
Answered 2021-Feb-09 at 04:58You need to change opencv2.4.13/cmake/OpenCVDetectCXXCompiler.cmake
(not sure which line) dumpversion
to dumpfullversion
Explanation is that
In gcc with higher version, dumpversion function can't get true full version number of compiler so that cmake progress will fail
Recommendation: On github, there plenty of refactored versions for both 4.2.0 and others. I recommend to upgrade to newer OpenCV versions for orb_slam_ros. Cmake lists and source files should be changed respectively.
QUESTION
I am trying to compile OpenCV for Android with contrib modules, mainly I am interested in sfm. I did a lot of research and finaly I did the following in order to support sfm:
Compiled gflags Compiled Glog Compiled Ceres
After that I used this cmake command to build and generate (partial output is given below):
...ANSWER
Answered 2021-Jan-24 at 21:16I just finished build opencv with android using this :
for ceres
QUESTION
I am successfully using ImageMagick for a wide range of formats. However, I noticed that some of the (imo) more exotic formats work just fine when I call ImageMagick on them through the command line, but they fail when I try to load the same image using the Magick++ API.
For example, the AAI image formats:
On the command line everything works fine:
...ANSWER
Answered 2020-Dec-27 at 12:13Imagemagick API's rarely support all of Imagemagick's operators etc. It is down to the coder of the API to decide which ones are worth including.
Searching the web I found this page which allows you to see if your format is supported: https://www.imagemagick.org/Magick++/CoderInfo.html
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