High Dynamic Range (HDR) is a term used for image and video, referring to an extended range than normal 8-bit-per-color channel precision, enabling representation of a wider range of luminance and complete color gamut.
Questions tagged [hdr]
167 questions
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Bit packing in yuv420p10le(tv) format
For YUV420 10 bit semiplanar format (also called as P010 as described in MSDN link) the data arrangement is as follows,
Y (luma) is stored in a plane with each pixel taking a word (16 bit)
U and V (chroma) is stored in a seperate plane together in…
Karthick S
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Saving ARCore's Estimated Environmental HDR Cube Map to memory
ARCore provides the HDR Cube map of the scene through the following API calls:
// Get the current frame.
Frame frame = session.update();
// Get the light estimate for the current frame.
LightEstimate lightEstimate = frame.getLightEstimate();
//…
VkTmz
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2 answers
High dynamic range: Can I feed ICtCp data directly to video encoder?
When I go through the details of High dynamic range feature, I have come across ICtCp color format (Rec.2020). Is this similar to YCbCr? What is the exact difference between YCbCr and ICtCp? Can I pass ICtCp buffer to video encoder (H264/avc or…
stackuser
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Get HDR image from images with different exposure times
I'm working on a project where we use an HDR sensor.
We are reading 4 'images' per image -> 4 different exposure times.
What's the best way to 'mix' these 4 images in order to get an output image with the highest posible dynamic range?
Has someone a…
Ivan
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How to add the color space information to a Radiance HDR format file created using "imwrite" in OPenCV
I have converted an HDR image in RGB color space to CIE-XYZ color space with "cvtColor" function, and then written the image to a Radiance HDR file using "imwrite" function. However, the header of the Radiance HDR file still says…
Jiaweikodomo
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10-bit alternative to GL_SRGB_ALPHA?
We are currently using GL_SRGB8_ALPHA8 for FBO color correction but it causes significant color banding in darker scenes.
Is there a version of GL_SRGB8_ALPHA8 that has 10 bit per color channel (e.g. GL_RGB10_A2)? If not, what workarounds are there…
Anton Duzenko
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how to get windows HDR switch status use code？
How can I get the status of the windows hdr/sdr switch with code?
msdn description switch button position：
Select the Start button, then select Settings > System > Display .
If you have multiple displays connected to your PC, choose the…
Zhou Chen
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Hdr photo for overlaying other photos
I wanted to know if it is possible starting from some photos by appropriately modifying the gamma values to perform an overlap and tone mapping and extract a hdr photo, I found some code on the internet but I want the exposure values which I do…
Da Nio
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FFMpeg - can't manage to create DnxHR files in Rec2020 / 4:4:4 Chroma sampling
I'm trying to convert an image sequence into a Quicktime DnxHR with 4:4:4 sampling in Rec2020 colorspace using FFMpeg 4.1.3. But I'm always ending with 4:2:0 Rec709 file.
In my lastest attempt FFMpeg seems to de the right thing :
ffmpeg.exe -y -i…
Shouille
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2 answers
What is the right way to write an HDR image using OpenCV in Python?
I want to perform arithmetic operations on an existing HDR image using OpenCV and then write the HDR file in the .hdr format. The arithmetic operation is not important to the question, so let's just say I want to read a .hdr file and then write it…
Mukul Khanna
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THREE.RGBELoader() HDR exposure does not change
I want to use sibl.
const loadHDR = () => {
new THREE.RGBELoader().load('./resource/textures/HDR/Etnies_Park_Center_3k.hdr', (texture, textureData)=> {
texture.encoding = THREE.RGBEEncoding;
texture.minFilter = THREE.NearestFilter;
…
엄승탁
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Is it possible to render MSAA to RGBA32F texture in WebGL2?
Firstly, I have msaa working good, like this(abstract):
sceneFramebuffer = new MultisampleRenderbuffer({
msaa: 8,
internalFormat: "RGBA8"
});
blitFramebuffer = new Framebuffer({
internalFormat: "RGBA8",
…
Zemledelec
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How to create one channel 32-bit float compressed texture in OpenGL
According documentation i can create HDR compressed texture, so i do this:
funcs->glGenTextures(1, &newCompressedTexture);
funcs->glActiveTexture(GL_TEXTURE0 + g_cTileTextureUnit);
funcs->glBindTexture(GL_TEXTURE_2D,…
Павел Бодак
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Aligning burst pictures
I've been playing a bit with some image processing techniques to do HDR pictures and similar. I find it very hard to align pictures taken in bursts... I tried some naïve motion search algorithms, simply based on comparing small samples of pixels…
gotch4
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2 answers
Lightroom Batch HDR Script
I don't have a lot or any experience in coding.
I'm looking to Batch Merge HDR photographs in lightroom CC for OSX. More specifically automate the Batch Process.
The task:
Select 3 bracketed photos in Lightroom from exposure -3 to +3
use Photomerge…
natsaab
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