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Image processing apparatus and method for image resizing matching data supply speed

An image processing device, image reduction technology, applied in image data processing, image communication, graphics and image conversion, etc., can solve problems such as low efficiency

Inactive Publication Date: 2007-03-21
CYPRESS SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a configuration causes memory accesses to occur between the image cropping process and the zooming in or out process, resulting in inefficient processing
Also, since the intermediate data is stored in the memory, an additional memory area needs to be set separately

Method used

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  • Image processing apparatus and method for image resizing matching data supply speed
  • Image processing apparatus and method for image resizing matching data supply speed
  • Image processing apparatus and method for image resizing matching data supply speed

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Embodiment Construction

[0042]Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0043] FIG. 1 is a block diagram showing a configuration example of an image processing apparatus according to the present invention. The image processing device 10 shown in FIG.

[0044] The image sensor 11 may be a solid-state imaging device such as a CCD or a CMOS, and has a light detection section in which a plurality of photodiodes are arranged in a matrix. These photodiodes make up the individual pixels for imaging purposes. Incident light undergoes photoelectric conversion pixel by pixel. Charges obtained by photoelectric conversion are stored in the charge storage portion to be read out. Then, the read image signal is amplified and A / D converted into digital image data, which is supplied to the next stage.

[0045] A vertical synchronization signal, a horizontal synchronization signal, and a clock signal synchronized with the image data signal ar...

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Abstract

The invention discloses an image processing device, which comprises: a data providing node, used for receiving line data scanned in the main scanning direction of an image; an image amplifying unit coupled to the data providing node, used for applying an upscaling process to produce amplified data at an output node, the upscaling process for enlarging the image with an upscaling factor equal to an integer; and an image downscaling unit coupled to the output node of the image upscaling unit for applying A downscaling process is used to downscale the upscaled image by a desired downscaling factor to produce downscaled data at the output node.

Description

technical field [0001] The present invention generally relates to an image processing device and an image processing method, and particularly relates to an image processing device and an image processing method for enlarging and reducing an image. Background technique [0002] Enlargement and reduction of a digital image is a resampling process that changes a sampling interval corresponding to a pixel position of an original image to a different sampling interval. Generally, such a process entails interpolating pixel values ​​of the original image with newly generated pixel values ​​(ie, generating new pixel values ​​from the pixel values ​​of the original image to be inserted between pixels of the original image). Examples of such interpolation include nearest neighbor interpolation, bilinear interpolation, bicubic interpolation, and the like. [0003] Nearest neighbor interpolation uses the value of the pixel closest to the pixel of interest whose pixel value needs to be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/393G06T3/40
CPCH04N5/23296H04N1/3935H04N5/2628G06T3/4007H04N23/69
Inventor 黑木健一郎工藤聪夫
Owner CYPRESS SEMICON CORP
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