Image processing method, image processing program and recording medium for recording the same program

An image processing and original image technology, which is applied in the field of image processing and can solve the problems of reduced light quantity and uneven peripheral light quantity.

Inactive Publication Date: 2004-01-21
NORITZ CORP
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  • Abstract
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  • Claims
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Problems solved by technology

[0013] Therefore, in order to solve the above-mentioned problems, an object of the present invention is to provide an image processing that can reliably and efficiently correct the decrease in the light intensity of the surrounding area, that is, the occurrence of uneven light intensity in the surrounding area, on the original image. Method, image processing program, and recording medium for recording image processing program

Method used

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  • Image processing method, image processing program and recording medium for recording the same program
  • Image processing method, image processing program and recording medium for recording the same program
  • Image processing method, image processing program and recording medium for recording the same program

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Embodiment Construction

[0046] Below, refer to Figure 1 to Figure 13 An example of the present invention will be described.

[0047] figure 2 is a block diagram showing a schematic configuration of an image output system according to an embodiment of the present invention. The image output system includes: a film scanner 1 , an image processing device 2 , a photo printing device 3 , a display unit 4 , and an input unit 5 .

[0048] The film scanner 1, for example, reads an image recorded on the negative film by irradiating light emitted from a light source onto the negative film of a photographic film and receiving the transmitted light by a CCD (Charge Coupled Device) or the like. The film scanner 1 outputs the read image data to the image processing device 2 by red component, green component, and blue component respectively.

[0049] The photo printing device 3 performs printing on the printing paper by exposing the photosensitive material to the printing paper based on the image data processe...

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Abstract

An image correction processing apparatus for correcting a pixel value of each pixel constituting image data obtained from an original image affected by the peripheral light-off is disclosed. The apparatus includes a pixel coordinate transforming unit (70) for converting a distance between each pixel of a group of pixels which have an equal amount of peripheral light amount reduction and which are located on a common contour line of an oval about a predetermined reference pixel located at the center thereof and said predetermined reference pixel into a radius of a true circle having a diameter corresponding to the major axis of the oval; a cos<4> calculating unit (71) for obtaining, for each pixel, an angle value thereof in proportion to the radius obtained by the conversion and then obtaining a cos<4> value of the angle value; and a correction calculating unit (72) for multiplying an inverse of said cos<4> value obtained for each pixel by a pixel value of this pixel, thereby to obtain a corrected pixel value for the pixel.

Description

technical field [0001] The present invention relates to, for example, reading an original image recorded on a negative film as digital image data, and performing a pixel value calculation of each pixel on the image data of the original image when exposing a printing paper in a digital exposure method. Revised image processing method. Background technique [0002] Previously, photographs were printed by irradiating light on a negative film on which the original image was recorded, and irradiating the light transmitted through the negative film onto the printing paper to realize the simulated exposure of printing. In addition, in recent years, red, blue, and green monochromatic lights have been converted into red, blue, and green monochromatic lights based on digital images obtained by scanning images on film and digital image data obtained by photographing digital cameras. The pixels are individually irradiated onto the printing paper to achieve the digital exposure of the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B27/72G06T5/00H04N1/401
CPCH04N1/401
Inventor 渡边加珠美北耕次
Owner NORITZ CORP
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