HDRI map#
Overview#
The ground truth exposed in this modality is a flattened image of the 360° HDRI background in the scene. HDRI maps are used to simulate realistic lighting and reflections in 3D scenes.
This modality consists of the following file:
Relevant file |
Location |
|---|---|
hdri_map.exr |
Camera folder |
This modality is not available in the Humans in Context platform.
hdri_map.exr#
This file holds a downscaled, 256x128 version of the scene’s background image. It maintains the original rectangular proportions of the background - the proportions the background had before being deformed and applied to the inside of a sphere in order to function as the scene’s background.
The exr format is used because this format enables us to provide 32 bits of detail per channel.
An example of a background image. Note the distortion in the image, reflecting its intended use as a spherical background rather than as a rectangle.#
Using this ground truth, you can train your model to perform image relighting and derive the absolute colors in a scene.
This file is not provided in the Humans in Context platform.