High dynamic range (hdr) fusion mechanism of multi-exposure images

A system, comprising one or more processors and one or more non-transitory computer-readable memories coupled to the one or more processors and configured with instructions executable by the one or more processors to cause the system to perform operations comprising:

• obtaining a plurality of images of a scene using a plurality of exposure settings;
• detecting a plurality of motion pixels on the plurality of images;
• for each of the motion pixels, obtaining a plurality of pixel values of the motion pixel respectively in the plurality of images;
• constructing a fusion tensor comprising a plurality of dimensions respectively corresponding to the plurality of exposure settings, wherein:
• each dimension of the fusion tensor comprises a pixel value range, and
• the fusion tensor comprises a plurality of weights, each weight being indexed by a combination of pixel values from the plurality of dimensions of the fusion tensor;
• for each of the motion pixels, mapping the motion pixel to the fusion tensor based on the plurality of the pixel values of the motion pixel to obtain a fusion weight corresponding to the motion pixel;
• and
• performing image fusion on the plurality of images based on the plurality of fusion weights corresponding to the plurality of motion pixels.

A non-transitory computer-readable storage medium configured with instructions executable by one or more processors to cause the one or more processors to perform operations comprising:

• obtaining a plurality of images of a scene using a plurality of exposure settings;
• detecting a plurality of motion pixels on the plurality of images;
• for each of the motion pixels, obtaining a plurality of pixel values of the motion pixel respectively in the plurality of images;
• constructing a fusion tensor comprising a plurality of dimensions respectively corresponding to the plurality of exposure settings, wherein:
• each dimension of the fusion tensor comprises a pixel value range, and
• the fusion tensor comprises a plurality of weights, each weight being indexed by a combination of pixel values from the plurality of dimensions of the fusion tensor;
• for each of the motion pixels, mapping the motion pixel to the fusion tensor based on the plurality of the pixel values of the motion pixel to obtain a fusion weight corresponding to the motion pixel;
• and
• performing image fusion on the plurality of images based on the plurality of fusion weights corresponding to the plurality of motion pixels.