METHOD FOR BLURRED IMAGE JUDGMENT
First Claim
1. A method for blurred image judgment, comprising steps of:
- providing a blur threshold value Tp;
calculating a focus value FV1 of an original image;
obfuscating said original image by using a blur function, thereby generating a blurred image, and calculating a focus value FV2 of said blurred image;
comparing a blur ratio FV1/FV2 with said blur threshold value Tp; and
discriminating whether said original image is blurred according to the comparing result.
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Abstract
A method for blurred image judgment is provided. Firstly, a focus value FV1 of an original image is calculated. By using a blur function, the original image is obfuscated to generate a blurred image, and then the focus value FV2 of the blurred image is calculated. A blur ratio FV1/FV2 is compared with a blur threshold value Tp, thereby discriminating whether the original image is blurred according to the comparing result. The method for blurred image judgment is applicable to a digital image capture device. If the original image is deemed blurred, a blur image signal is issued to notify the user whether the retaking operation is done.
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Citations
9 Claims
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1. A method for blurred image judgment, comprising steps of:
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providing a blur threshold value Tp; calculating a focus value FV1 of an original image; obfuscating said original image by using a blur function, thereby generating a blurred image, and calculating a focus value FV2 of said blurred image; comparing a blur ratio FV1/FV2 with said blur threshold value Tp; and discriminating whether said original image is blurred according to the comparing result. - View Dependent Claims (2, 3, 4, 5)
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6. A digital image capture device for generating an image signal of an object, said digital image capture device comprising:
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an image signal generator for generating said image signal of said object; and an image judging module for discriminating whether said image signal is blurred. - View Dependent Claims (7, 8, 9)
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Specification