Method and system for learning-based quality assessment of images
First Claim
1. A computer-readable medium containing instructions for controlling a computer system with a processor and a memory to assess quality of an image, the instructions implementing steps comprising:
- accessing a first set and a second set of images;
accessing a quality rating for each image of the first set;
accessing a first quality score for each image of the second set;
training a classifier to indicate quality of images using the first set of images and their quality ratings;
calculating a second quality score for each image of the second set using the trained classifier; and
generating a mapping function based on the trained classifier and the first and second quality scores;
wherein a quality score for the image is calculated using the trained classifier and generated mapping function,wherein the classifier is an adaptive boosting classifier, andwherein the instructions are executed by the processor after being loaded into memory from the computer-readable medium.
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Abstract
A method and system for learning-based assessment of the quality of an image is provided. An image quality assessment system trains an image classifier based on a training set of sample images that have quality ratings. To train the classifier, the assessment system generates a feature vector for each sample image representing various attributes of the image. The assessment system may train the classifier using an adaptive boosting technique to calculate a quality score for an image. Once the classifier is trained, the assessment system may calculate the quality of an image by generating a feature vector for that image and applying the trained classifier to the feature vector to calculate the quality score for the image.
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Citations
9 Claims
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1. A computer-readable medium containing instructions for controlling a computer system with a processor and a memory to assess quality of an image, the instructions implementing steps comprising:
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accessing a first set and a second set of images; accessing a quality rating for each image of the first set; accessing a first quality score for each image of the second set; training a classifier to indicate quality of images using the first set of images and their quality ratings; calculating a second quality score for each image of the second set using the trained classifier; and generating a mapping function based on the trained classifier and the first and second quality scores; wherein a quality score for the image is calculated using the trained classifier and generated mapping function, wherein the classifier is an adaptive boosting classifier, and wherein the instructions are executed by the processor after being loaded into memory from the computer-readable medium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification