Image processing method of obtaining a high dynamic range image
AssigneeAltek Corporation
InventorsYun Chin Li, Chan Min Chou
Life of this patent
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Abstract
An image processing method, applicable to a digital image device, includes the following steps. At least one original image of different brightness ranges is captured, and more images of different brightness ranges are generated from the original image by using an image post-processing technique. Based on characteristics of the image of each brightness range, the weights of the image of each brightness range are defined. Then, hierarchical fusion is performed on the images of the different brightness ranges according to weight relations, so as to form a high-dynamic-range image capable of presenting features of each brightness range.
Claims10
An image processing method, comprising steps of:
- capturing an original image;
- obtaining a high-bright image, a medium-bright image, and a low-bright image from the original image;
- determining a high-bright weight array, a medium-bright weight array, and a low-bright weight array according to the high-bright image, the medium-bright image, and the low-bright image;
- and
- obtaining a high-dynamic-range image according to the high-bright image, the medium-bright image, the low-bright image, the high-bright weight array, the medium-bright weight array, and the low-bright weight array,
- wherein the step of determining the high-bright weight array, the medium-bright weight array, and the low-bright weight array comprises executing an edge detection procedure, so as to obtain the high-bright weight array, the medium-bright weight array, and the low-bright weight array from the high-bright image, the medium-bright image, and the low-bright image.
An image processing method, comprising steps of:
- capturing an original image;
- obtaining a high-bright image, a medium-bright image, and a low-bright image from the original image;
- determining a high-bright weight array, a medium-bright weight array, and a low-bright weight array according to the high-bright image, the medium-bright image, and the low-bright image;
- and
- obtaining a high-dynamic-range image according to the high-bright image, the medium-bright image, the low-bright image, the high-bright weight array, the medium-bright weight array, and the low-bright weight array,
- wherein the step of obtaining the high-dynamic-range image according to the high-bright image, the medium-bright image, the low-bright image, the high-bright weight array, the medium-bright weight array, and the low-bright weight array further comprises steps of:
- executing a hierarchical procedure according to the high-bright image, the medium-bright image, and the low-bright image, so as to obtain a softened image;
- obtaining an artificial image according to the high-bright image, the medium-bright image, the low-bright image, the high-bright weight array, the medium-bright weight array, and the low-bright weight array;
- and
- obtaining the high-dynamic-range image according to the softened image and the artificial image.
Dependencies are inferred from the claim text.