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Computer program, image processing method, and image processing apparatus

專利號
US11176720B2
公開日期
2021-11-16
申請人
Axell Corporation（JP Tokyo）
發(fā)明人
Shuji Okuno
IPC分類
G06T11/60; G06T5/50; G06T3/40
技術(shù)領(lǐng)域
image,resolution,unit,digital,processing,temporary,target,original,editing,control
地域： Tokyo

摘要

To provide a computer program, an image processing method, and an image processing apparatus that avoid deterioration due to free deformation with respect to a digital image.The computer program causes a computer to execute a process of receiving editing order including scaling, rotation, shifting, or distortion with respect to a digital image to be processed, identifying a target resolution of the digital image to be processed, generating a temporary reference image with a resolution predetermined times the target resolution based on the digital image, performing rotation, shifting, or distortion in the received editing with respect to the temporary reference image, and outputting the digital image with the target resolution by performing sampling at a rate corresponding to the target resolution with respect to the edited temporary reference image.

說明書

1 2 3 4 5 6 7 8 9 10 11 12 13 14
FIELD

The present invention relates to a computer program, an image processing method, and an image processing apparatus that causes a computer to perform image processing for avoiding deterioration due to free deformation with respect to a digital image.

BACKGROUND

In a digital image, pixels are arranged in a matrix, and an image is expressed by colors and pixel values such as luminance of respective pixels. Therefore, when a digital image is rotated with an angle other than multiples of 90 degrees, interpolation processing becomes necessary, and the image quality deteriorates such as an occurrence of blurring.

With respect to the above problem, conventionally, there has been proposed a method of prohibiting rotation when deterioration of detailed portions is not acceptable, or avoiding rotation with an arbitrary angle as much as possible, for example, in a case in which detection processing is performed by using a digital image rotated with an angle other than multiples of 90 degrees, performing processing by using a plurality of digital images rotated with different angles (for example, Japanese Patent Application Laid-open No. 2015-188738 and Japanese Patent Application Laid-open No. 2012-063945).

權(quán)利要求

1
What is claimed is:1. An image processing method including a process of:receiving editing order including rotation, shifting, or distortion with respect to a digital image to be processed by an operation unit comprising a user interface having a key board, a mouse, a physical button and a software button;identifying a target resolution of the digital image to be processed by a control unit comprising a central processing unit, a memory;storing a temporary reference image with a resolution predetermined times the target resolution based on the digital image by an image processing unit comprising a graphics processing unit or a processor having a dedicated communication circuit and a memory;performing received editing order with respect to the temporary reference image by said image processing unit; andoutputting the digital image with the target resolution by performing sampling at a sampling rate higher than the predetermined times the target resolution, with respect to the edited temporary reference image by said image processing unit controlled by said control unit.2. An image processing apparatus comprising:an operation unit comprising a user interface having a key board, a mouse, a physical button and a software button that receives editing order including rotation, shifting, or distortion with respect to a digital image to be processed; andan image processing unit comprising a graphics processing unit or a processor having a dedicated communication circuit and a memory that stores a temporary reference image with a resolution predetermined times an identified target resolution with respect to the digital image to be processed, whereinthe image processing unitperforms editing order received by the operation unit with respect to the temporary reference image, andoutputs the digital image with the target resolution by performing sampling at a sampling rate higher than the predetermined times the target resolution with respect to the edited temporary reference image.3. The image processing method according to claim 1, wherein the method further causing the image processing unit to execute a process of:deciding an oversampling rate with a resolution equal to or higher than that of the temporary reference image according to the editing order, with respect to the edited temporary reference image;performing oversampling at the decided oversampling rate; andconverting an image acquired by oversampling into a digital image with the target resolution.4. The image processing method according to claim 3, wherein the predetermined times is twice, and the oversampling rate is three times.5. The image processing method according to claim 1, wherein when a resolution of the digital image to be processed is lower than the predetermined times the target resolution,the image processing unit executing a process of:generating a super-resolution image with a resolution that is the predetermined times based on the digital image; anddesignating the generated super-resolution image as the temporary reference image.
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