Method for reconstructing HDR images, terminal, and electronic device

A method for reconstructing an HDR image, comprising:

• acquiring a plurality of original images with same photographing scene and different exposure degrees;
• screening out a reference image from the plurality of original images, performing feature alignment processing on remaining original images according to the reference image, and obtaining displacement images of the remaining original images;
• determining an enhanced image according to the reference image and the displacement images of the remaining original images, wherein the enhanced image is obtained by performing image enhancement processing on a fused image after a down-sampling operation, and the fused image is obtained by performing feature fusion on the reference image and the displacement images of the remaining original images;
• and
• reconstructing the HDR images corresponding to the plurality of original images according to the enhanced image,
• wherein after determining an enhanced image according to the reference image and the displacement images, and before reconstructing the HDR images corresponding to the plurality of original images according to the enhanced image, the method further comprises performing at least one time of image enhancement operation, wherein each time of image enhancement operation performs the following step of:
• taking the enhanced image determined last time as the reference image of a current time, and determining the enhanced image of the current time according to the reference image of the current time and the displacement image.

A method for reconstructing an HDR image, comprising:

• acquiring a plurality of original images with same photographing scene and different exposure degrees;
• screening out a reference image from the plurality of original images, performing feature alignment processing on remaining original images according to the reference image, and obtaining displacement images of the remaining original images;
• determining an enhanced image according to the reference image and the displacement images of the remaining original images, wherein the enhanced image is obtained by performing image enhancement processing on a fused image after a down-sampling operation, and the fused image is obtained by performing feature fusion on the reference image and the displacement images of the remaining original images;
• and
• reconstructing the HDR images corresponding to the plurality of original images according to the enhanced image,
• wherein performing feature alignment processing on remaining original images according to the reference image, and obtaining displacement images of the remaining original images comprises:
• according to feature similarity between the reference image and each remaining original image, determining a displacement parameter matrix corresponding to the remaining original image;
• and
• performing displacement on features of the remaining original images according to the displacement parameter matrix to obtain the displacement images.