OpenEXR is an open-source high dynamic range (HDR) image file format developed by Industrial Light & Magic (ILM). It is designed to provide high-quality images for visual effects and animation work. OpenEXR supports a wide range of features, including:

• **High Dynamic Range:** OpenEXR can store a much wider range of brightness levels than traditional image formats, allowing for more realistic and detailed images.
• **Multiple Image Channels:** OpenEXR supports multiple image channels, including color channels, depth channels, and arbitrary data channels. This allows for greater flexibility in compositing and other image processing tasks.
• **Lossless and Lossy Compression:** OpenEXR supports both lossless and lossy compression, allowing for a balance between image quality and file size.
• **Deep Data:** OpenEXR supports deep data, which allows for the storage of multiple values per pixel. This is useful for representing complex scenes with multiple layers of transparency.

• **Official Website:** s://www.openexr.com/(https://www.openexr.com/)
• **GitHub Repository:** s://github.com/AcademySoftwareFoundation/openexr(https://github.com/AcademySoftwareFoundation/openexr)
• **Wikipedia:** s://en.wikipedia.org/wiki/OpenEXR(https://en.wikipedia.org/wiki/OpenEXR)
• **OpenEXR Technical Introduction:** [invalid URL removed]

```c++

1. include <ImfRgbaFile.h>

using namespace Imf; using namespace Imath;

int main() {

   RgbaInputFile file("image.exr");
   Box2i dw = file.dataWindow();

   int width = dw.max.x - dw.min.x + 1;
   int height = dw.max.y - dw.min.y + 1;

   Array2D pixels(height, width);
   file.setFrameBuffer(&pixels[0][0] - dw.min.x - dw.min.y * width, 1, width);
   file.readPixels(dw.min.y, dw.max.y);

   // Process the pixels...

This is a basic example of how to read an OpenEXR image using the OpenEXR C++ library.