IMAGE PROCESSING APPARATUS AND ITS ADJUSTMENT METHOD
First Claim
1. An image processing apparatus, comprising:
- an image acquisition unit that acquires an image;
a correction unit that corrects pixel values of the image acquired by the image acquisition unit by using correction coefficients to produce a corrected image;
an object recognition unit that recognizes an object in the corrected image;
a storage unit that stores in advance standard color characteristics of a predetermined object which is a recognition target;
a color characteristics acquisition unit that if the predetermined object is recognized by the object recognition unit, acquires color characteristics of the predetermined object;
a comparison unit that compares the color characteristics of the predetermined object acquired by the color characteristics acquisition unit with the standard color characteristics of the same predetermined object stored in advance by the storage unit; and
an updating unit that updates the correction coefficients used by the correction unit based on a result of comparison of the color characteristics and the standard color characteristics so as to reduce a difference between the color characteristics and the standard color characteristics.
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Abstract
In an image processing apparatus, an image acquisition unit acquires an image. A correction unit corrects pixel values of pixels composed of the acquired image by using correction coefficients to produce a correct image. An object recognition unit recognizes an object in the corrected image. A storage unit stores in advance standard color characteristics of a predetermined object which is a recognition target. A color characteristics acquisition unit acquires color characteristics of the predetermined object if the predetermined object is recognized by the object recognition unit. A comparison unit compares the color characteristics of the acquired object with the standard color characteristics of the same predetermined object stored in advance in the storage unit. An updating unit updates the correction coefficients used in the correction unit based on a result of comparison so as to reduce a difference between the color characteristics and the standard color characteristics.
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Citations
10 Claims
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1. An image processing apparatus, comprising:
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an image acquisition unit that acquires an image; a correction unit that corrects pixel values of the image acquired by the image acquisition unit by using correction coefficients to produce a corrected image; an object recognition unit that recognizes an object in the corrected image; a storage unit that stores in advance standard color characteristics of a predetermined object which is a recognition target; a color characteristics acquisition unit that if the predetermined object is recognized by the object recognition unit, acquires color characteristics of the predetermined object; a comparison unit that compares the color characteristics of the predetermined object acquired by the color characteristics acquisition unit with the standard color characteristics of the same predetermined object stored in advance by the storage unit; and an updating unit that updates the correction coefficients used by the correction unit based on a result of comparison of the color characteristics and the standard color characteristics so as to reduce a difference between the color characteristics and the standard color characteristics. - View Dependent Claims (2, 3, 4, 5)
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6. A method for adjusting an image processing apparatus that includes an image acquisition unit which acquires an image, a correction unit that corrects pixel values of pixels composed of an acquired image by using correction coefficients, and an object recognition unit that recognizes an object in a corrected image whose pixel values are corrected, the method comprising:
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storing standard color characteristics of an image of a predetermined standard light source in the storage unit in advance; acquiring, at the image acquisition unit, an image of the predetermined standard light source; correcting, at the correction unit, the acquired image; comparing, at a comparison unit, color characteristics of the corrected image with the standard color characteristics of the image stored in advance in the storage unit; and updating, at a updating unit, the correction coefficients based on a result of comparison of the color characteristics and the standard color characteristics so as to reduce a difference between the color characteristics and the standard color characteristics. - View Dependent Claims (7, 8, 9, 10)
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Specification