Method and system of generating high dynamic range image corresponding to specific scene
First Claim
1. A method of generating a high dynamic range (HDR) image corresponding to a specific scene, comprising:
- shooting a specific scene to generate a base image;
selecting a bright area and a dark area from the base image;
determining base luminance according to the base image;
shooting the specific scene to generate at least a first image, wherein average luminance of a part of the first image corresponding to the bright area of the base image is less than or equal to the base luminance;
shooting the specific scene to generate at least a second image, wherein average luminance of a part of the second image corresponding to the dark area of the base image is greater than or equal to the base luminance; and
combining at least the first image and the second image into an HDR image corresponding to the specific scene;
wherein the step of selecting the bright area and the dark area from the base image comprises;
dividing the base image into a plurality of blocks;
calculating average luminance of each block individually;
for each base image generated and regardless of the luminance properties of the base image, selecting at least one block whose average luminance lies in a high luminance range as the bright area; and
for each base image generated and regardless of the luminance properties of the base image, selecting at least one block whose average luminance lies in a low luminance range as the dark area.
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Abstract
A method of generating a high dynamic range image corresponding to a specific scene. The method includes shooting a specific scene to generate a base image; selecting a bright area and a dark area from the base image; determining base luminance according to the base image; shooting the specific scene to generate at least a first image, wherein average luminance of a part of the first image corresponding to the bright area of the base image is less than or equal to the base luminance; shooting the specific scene to generate at least a second image, wherein average luminance of a part of the second image corresponding to the dark area of the base image is greater than or equal to the base luminance; and combining at least the first image and the second image into a high dynamic range image corresponding to the specific scene.
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Citations
22 Claims
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1. A method of generating a high dynamic range (HDR) image corresponding to a specific scene, comprising:
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shooting a specific scene to generate a base image; selecting a bright area and a dark area from the base image; determining base luminance according to the base image; shooting the specific scene to generate at least a first image, wherein average luminance of a part of the first image corresponding to the bright area of the base image is less than or equal to the base luminance; shooting the specific scene to generate at least a second image, wherein average luminance of a part of the second image corresponding to the dark area of the base image is greater than or equal to the base luminance; and combining at least the first image and the second image into an HDR image corresponding to the specific scene; wherein the step of selecting the bright area and the dark area from the base image comprises; dividing the base image into a plurality of blocks; calculating average luminance of each block individually; for each base image generated and regardless of the luminance properties of the base image, selecting at least one block whose average luminance lies in a high luminance range as the bright area; and for each base image generated and regardless of the luminance properties of the base image, selecting at least one block whose average luminance lies in a low luminance range as the dark area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system of generating an HDR image corresponding to a specific scene, comprising:
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a shooting unit, for shooting a specific scene to generate a base image, at least a first image, and at least a second image; a deciding unit, coupled to the shooting unit, for selecting a bright area and a dark area from the base image, and determining base luminance according to the base image, wherein for each base image generated and regardless of the luminance properties of the base image the deciding unit divides the base image into a plurality of blocks, calculates average luminance of each block individually, selects at least one block whose average luminance lies in a high luminance range as the bright area, and selects at least one block whose average luminance lies in a low luminance range as the dark area; and a combining unit, coupled to the shooting unit, for combining at least the first image and the second image into an HDR image corresponding to the specific scene; wherein average luminance of a part of the first image corresponding to the bright area of the base image is less than or equal to the base luminance, and average luminance of a part of the second image corresponding to the dark area of the base image is greater than or equal to the base luminance. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification