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Image interpolation device and method, and image reading device

An interpolation method and interpolation technology, applied in image communication, image data processing, image data processing, etc., can solve problems such as missing pixel interpolation accuracy and insufficient interpolation accuracy

Active Publication Date: 2011-12-07
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the prior art described above, the interpolation accuracy of missing pixels, especially when interpolating data obtained by reading a document containing periodic data, may be insufficient.

Method used

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  • Image interpolation device and method, and image reading device
  • Image interpolation device and method, and image reading device
  • Image interpolation device and method, and image reading device

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Experimental program
Comparison scheme
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Embodiment approach 1

[0048] figure 1 It is a diagram showing the configuration of the image interpolation device according to Embodiment 1 of the present invention. The illustrated image interpolation device 1 includes a data storage unit 2 , a filter interpolation unit 3 , a limit processing unit 4 , and an interpolation data insertion unit 5 .

[0049] Image data DI is input to the data storage unit 2 .

[0050] The data storage unit 2 stores data in a certain range near the missing pixel by using a plurality of flip-flops connected vertically, and outputs it as data Dm.

[0051] The data Dm is input to the filter interpolation unit 3 , the limit processing unit 4 , and the interpolation data insertion unit 5 .

[0052] The filter interpolation unit 3 has a product-sum calculation unit 6 and a coefficient storage unit 7 . The coefficient storage unit 7 stores coefficients used in the sum-of-products calculation unit 6 .

[0053] The product-sum calculation unit 6 outputs the result of the pr...

Embodiment approach 2

[0350] Figure 20 It is a diagram showing the configuration of an image interpolation device according to Embodiment 2 of the present invention. The image interpolation device according to Embodiment 2 of the present invention includes: a data storage unit 2, a filter interpolation unit 3, a first average maintaining interpolation unit 17-1, a second average maintaining interpolation unit 17-2, an n-th average maintaining interpolation unit 17- n. Selection control unit 21 , output unit 20 and interpolation data insertion unit 5 . The selection control unit 21 has a scoring unit 18 and a management unit 19 .

[0351] The image data DI is input to the data storage unit 2, and the data storage unit 2 stores a certain range of data using a flip-flop or the like, and outputs a certain range of data Dm. The data Dm is input to the filter interpolation unit 3 , the first mean maintaining interpolation unit 17 - 1 , the second mean maintaining interpolation unit 17 - 2 , .

[0352...

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Abstract

The invention provides an image interpolation device and method, and an image reading device. The image interpolation device has: a data storage unit (2), which stores data near missing pixels; a filter interpolation unit (3), which performs a product-sum operation on the data output from the data storage unit; a limit processing unit (4), which filters The data output by the interpolation unit is limited within the range of the data storage unit; and an interpolation data insertion unit (5) interpolates the data output by the limit processing unit at positions corresponding to missing pixels in the data output by the data storage unit. It is possible to improve the interpolation accuracy of missing pixels, especially the interpolation accuracy when interpolating data obtained by reading a document including periodic data.

Description

technical field [0001] The present invention relates to an image interpolation device for interpolating pixels when an image is missing for some reason when an original is digitally read using a scanner, facsimile machine, copier, etc. An image interpolation device and method for interpolating pixels at a connection point of an IC. The close-contact image sensor has a plurality of sensor IC chips arranged in a line, and the sensor IC chip has a plurality of imaging elements arranged in a line. Background technique [0002] As a conventional image interpolation device used in such a case as described above, there are devices that calculate interpolation data of a missing pixel using methods such as: a method of using the average value of pixels adjacent to the missing pixel as interpolation data; using a least square method A method of obtaining a regression line of pixels adjacent to the missing pixel, and calculating interpolation data based on the regression line; a method...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/19G06T1/00H04N1/028H04N1/40H04N5/335H04N25/00
CPCH04N2201/0081H04N1/193G06T3/4007H04N1/401
Inventor 山中聪
Owner MITSUBISHI ELECTRIC CORP