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Image processing device, image processing method, and program

一种图像处理装置、输入图像的技术，应用在图像处理方法以及程序领域，能够解决增加处理成本、图像显示延迟等问题，达到减少分带现象的效果

Active Publication Date: 2019-01-04
SONY CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] However, if this similarity judgment or correction process is performed for all pixels, there is a dilemma of increasing processing cost and the possibility of image display delay

Method used

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  • Image processing device, image processing method, and program
  • Image processing device, image processing method, and program
  • Image processing device, image processing method, and program

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Embodiment Construction

[0069] Hereinafter, details of the image processing device, image processing method, and program of the present disclosure will be described with reference to the accompanying drawings. It should be noted that the description will be made based on the following items.

[0070] 1. Overview of subsampled images

[0071] 2. About the configuration and processing of the image processing device of the present disclosure

[0072] 2-1. Regarding processing performed by the color space conversion unit

[0073] 2-2. Regarding the processing performed by the signal correction unit

[0074] 2-3. Regarding the processing performed by the output signal generation unit

[0075] 3. Regarding the sequence of image processing performed by the image processing device

[0076] 4. About the hardware configuration example of the image processing device

[0077] 5. Summary of the configuration of the present disclosure

[0078] [1. Overview of subsampled images]

[0079] First, an overview o...

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Abstract

Provided are a device and method for reducing the banding phenomenon in subsampled images, and that achieve high picture quality. A subsampled image to which an adjoining pixel value is copied at thesubsampling position of the pixel value is made to serve as an input image, and global gain for the signal to be corrected, which is the ratio of the inclination of the signal to be corrected for theglobal area comprising a plurality of consecutive pixels including the pixel position of the pixel to be corrected in the input image to the inclination of the brightness signal, is calculated, localinclination of brightness, which is the inclination of the brightness signal of a local area smaller than the global area, which is within the global area and includes the pixel position of the pixelto be corrected of the input image, is calculated, local inclination of brightness is multiplied by the global gain of the signal to be corrected, and the multiplication results are applied to calculate the corrected pixel value for the pixel to be corrected. For example, the signal pixel value subject to correction on the edge of the local area is added to the multiplied value to calculate the corrected pixel value.

Description

technical field [0001] The present disclosure relates to an image processing device, an image processing method, and a program. In more detail, the present disclosure relates to image processing that reduces deterioration in image quality of an interpolation image generated based on a so-called subsampled image signal (in which one pixel signal is set in units of a plurality of pixels) Device, image processing method and program. Background technique [0002] During transmission or recording of image data, data is generated by thinning out a part of a signal in units of one pixel to reduce the amount of data. [0003] For example, in the case of using a YCbCr signal composed of a luminance signal Y and chrominance signals Cb and Cr, by data thinning, for example, by adapting the chrominance signals Cb and Cr into a single signal in units of several pixels to reduce the amount of data. [0004] A YCbCr image is image data corresponding to a color space expressed using a lu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N11/20H04N9/77
CPCH04N9/646H04N9/67H04N1/41H04N1/608H04N1/6005H04N1/603H04N11/20H04N1/646H04N9/77
Inventor 江藤博昭
Owner SONY CORP
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