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Best practices
1 vote
1 replies
102 views

I’m processing a sequence of OpenEXR frames and I’m seeing what looks like “quality compression” only in one specific pipeline. I suspect this is actually precision loss / quantization (e.g., writing ...
Score of 1
0 answers
114 views

I'm developing an application on windows that manipulates images. I'm using msys2/ucrt64 version of gcc for compiling and msys2/ucrt64 version of openimageio library for image import/export. My code ...
Score of 0
1 answer
294 views

I have a library that uses many dependencies managed by vcpkg. I have never had any issues until I recently added OpenImageIO. On Windows 10 (MSVC 17.6) my library builds and links successfully, and ...
Score of 2
2 answers
524 views

I have a test 16bit tiff file that is using ACEScc colour space: I want to process it using OCIO to, for instance, linear sRGB. OCIO provides examples of how to do it: https://opencolorio.readthedocs....
Score of 0
1 answer
300 views

I want to render level curves from an image, and for that I need only one channel. When using read_image, it generates RGBRGBRGB, which is incompatible with matplotlib contour. From the documentation ...
Score of 0
1 answer
1164 views

Is it possible to use oiio tool to convert a mov to a sequence of images? There is a way to extract a single frame (--subimage) but this gets very slow for longer QTs (more than 2000 frames). Since it ...
Score of 0
1 answer
335 views

I am developing an Image viewer. My main goal is to make something able to easily load .EXR files along with all other main formats. I based it around : PySide2 (Qt) for the UI. OpenImageIO for .exr ...
Score of 0
1 answer
1156 views

I used images and annotation data from the open images dataset v6. I was able to retrieve the images, but not the annotation information. Can you please tell me what to do? Current status I ran the ...
Score of 1
1 answer
1378 views

I can't find anywhere online or in documentation that explains clearly how to make this conversion using Python. In my situation I need to do it with OpenImageIO- I just need to feed it a path and ...
Score of 0
1 answer
632 views

I'm trying to convert .hdr and .exr images to resized .png images. The conversion part works as expected but when I try to resize the image before saving the result is just a black image. I'm using ...
Score of 1
0 answers
423 views

I was trying to load image using opeimageio which I installed using vcpkg. But I get an error saying F:\vcpkg\installed\x64-windows\include\OpenImageIO\fmt\format-inl.h(1371,8): error C2061: syntax ...
Score of 1
1 answer
48 views

The plugin for GIFs or Movies defines a FramesPerSecond attribute of type int[2] (rational) What does that mean? One possible interpretation I came up with is that the second item in the array holds ...
Score of 1
1 answer
1219 views

I am working with OpenImage Denoiser, which loads EXR files using OpenImageIO. Images are loaded like so: std::shared_ptr<ImageBuffer> loadImageOIIO(const std::string& filename, int ...
Score of 0
1 answer
484 views

I hope I'm clear in my question, if not please tell me. I am using OpenImageIO's python bindings (pybind11) for some scripts that will run on hundreds of computers. Unfortunately it took me a lot of ...
Score of 1
2 answers
1195 views

There is command in the oiiotool to swap the channels of a image by using the --ch command like so: oiiotool rgba.tif --ch R=B,G,B=R,A -o bgra.tif What Im asking is if there is an option to load two ...

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