Image processing device, image display device, image processing method, and image processing program
First Claim
1. An image processing device, comprising:
- a saturation-enhancement-amount determining device that determines a saturation enhancement amount by extracting saturation information from input image data;
a color component extracting device that extracts from the input image data a plurality of color components having saturation to be enhanced;
a saturation enhancing device that enhances, based on the saturation enhancement amount determined by the saturation-enhancement-amount determining device, the saturations of the plurality of color component extracted by the color component extracting device; and
an enhancement-amount adjusting device that adjusts the determined saturation enhancement amount determined by the saturation-enhancement-amount determining device, such that a color balance in a positive and a negative region of a color space is adjusted, when the saturation enhancing device enhances a saturation of a predetermined color component among the plurality of color components and such that an enhancement amount of the predetermined color component in the negative region of the color space is smaller than an enhancement amount in the positive region thereof, the predetermined color component in the color space being a Cb color component in a YCbCr color space, and an adjusting degree for an enhancement amount in a positive region of the Cb color component being greater than an adjusting degree for an enhancement amount in a negative region of the Cb color component of the YCbCr color space.
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Accused Products
Abstract
Aspects of the invention relate to a method of processing images capable of performing natural saturation enhancement having a balance between color components with a small amount of calculation is provided. The image processing device may be arranged in an image display device or may be a device for providing display image data to the external image display device to perform the saturation enhancement of the input image data. Specifically, saturation information can be extracted from the input image data to determine a saturation enhancement amount. In addition, a color component to which the saturation enhancement is performed can be extracted from the input image data. Further, based on the determined saturation enhancement amount, the saturation enhancement for each color component can be performed. Here, for the predetermined color component, the saturation is enhanced after the saturation enhancement amount is adjusted. The color component included in the input image data may be, for example, Cb and Cr in the YCbCr color space. The saturation enhancement amount is adjusted to the predetermined color component. Therefore, the color balance of the image data after the saturation can be properly adjusted and the natural image data can be obtained.
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Citations
10 Claims
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1. An image processing device, comprising:
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a saturation-enhancement-amount determining device that determines a saturation enhancement amount by extracting saturation information from input image data; a color component extracting device that extracts from the input image data a plurality of color components having saturation to be enhanced; a saturation enhancing device that enhances, based on the saturation enhancement amount determined by the saturation-enhancement-amount determining device, the saturations of the plurality of color component extracted by the color component extracting device; and an enhancement-amount adjusting device that adjusts the determined saturation enhancement amount determined by the saturation-enhancement-amount determining device, such that a color balance in a positive and a negative region of a color space is adjusted, when the saturation enhancing device enhances a saturation of a predetermined color component among the plurality of color components and such that an enhancement amount of the predetermined color component in the negative region of the color space is smaller than an enhancement amount in the positive region thereof, the predetermined color component in the color space being a Cb color component in a YCbCr color space, and an adjusting degree for an enhancement amount in a positive region of the Cb color component being greater than an adjusting degree for an enhancement amount in a negative region of the Cb color component of the YCbCr color space. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An image processing method to be implemented by an image processing apparatus, comprising:
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determining a saturation enhancement amount by extracting saturation information from input image data; extracting from the input image data a plurality of color components having saturation to be enhanced; enhancing the saturations of the plurality of color components based on the determined saturation enhancement amount; and adjusting the determined saturation enhancement amount, such that a color balance in a positive and a negative region of a color space is adjusted, when enhancing is being performed on a saturation of a predetermined color component among the plurality of color components and such that an enhancement amount of the predetermined color component in the negative region of the color space is smaller than an enhancement amount in the positive region thereof, the predetermined color component in the color space being a Cb color component in a YCbCr color space, and an adjusting degree for an enhancement amount in a positive region of the Cb color component being greater than an adjusting degree for an enhancement amount in a negative region of the Cb color component of the YCbCr color space.
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10. An image processing program stored on a computer readable medium and executed by a computer that allows the computer to function as:
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a saturation-enhancement-amount determining device that determines a saturation enhancement amount by extracting saturation information from input image data; a color component extracting device that extracts from the input image data a plurality of color components having saturation to be enhanced; a saturation enhancing device that enhances, based on the saturation enhancement amount determined by the saturation-enhancement-amount determining device, the saturation of the color component extracted by the color component extracting device; and an enhancement-amount adjusting device that adjusts the determined saturation enhancement amount determined by the saturation-enhancement-amount determining device, such that a color balance in a positive and a negative region of a color space is adjusted, when the saturation enhancing device enhances a saturation of a predetermined color component among the plurality of color components and such that an enhancement amount of the predetermined color component in the negative region of the color space is smaller than an enhancement amount in the positive region thereof, the predetermined color component in the color space being a Cb color component in a YCbCr color space, and an adjusting degree for an enhancement amount in a positive region of the Cb color component being greater than an adjusting degree for an enhancement amount in a negative region of the Cb color component of the YCbCr color space.
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Specification