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Image processing apparatus, image processing method, and distortion correcting method

An image processing device and distortion correction technology, applied in image data processing, processor architecture/configuration, image communication, etc.

Active Publication Date: 2006-09-06
OLYMPUS CORP
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  • Abstract
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  • Claims
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Problems solved by technology

[0036] In this way, by providing a distortion correction range calculation unit for calculating the range of the input image for distortion correction processing, the area corresponding to a part or all of the output range of the output image (that is, the distortion-corrected image) is calculated in the input image (that is, the captured image). image), so that the corrected image obtained by distortion correction can be output with no more and no less for the output range corresponding to the output, and the corrected image will not overflow or be insufficient relative to the output range

Method used

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  • Image processing apparatus, image processing method, and distortion correcting method
  • Image processing apparatus, image processing method, and distortion correcting method
  • Image processing apparatus, image processing method, and distortion correcting method

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[0123] The embodiments of the invention will be described with reference to the drawings.

[0124] FIG. 1 is a block diagram showing the overall configuration of the image processing apparatus according to the first embodiment of the present invention.

[0125] In the image processing device of FIG. 1, under the control of the CPU 4 that controls the various parts connected to the bus 3, the image pickup signal from the CCD 1 is subjected to pixel defect processing and A / D conversion in the preprocessing circuit 2, and the obtained The image data is temporarily stored in the frame memory 5 through the bus 3. The frame memory 5 is composed of SDRAM or the like, and is a memory that stores data before image processing and data after image processing. Then, the image data read from the frame memory 5 is input to the first data order conversion unit 6 via the bus 3. As described later in FIG. 7, the first data order conversion unit 6 has a plurality of, here, two memories that can sto...

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Abstract

The image processor having a distortion correction processing part 8 includes a distortion correction range calculating part 12 for calculating an input image range necessary for the distortion correction processing part 8 to perform distortion correction processing. Thereby, a corrected image(output image) acquired by the distortion correction can be outputted to an image output range neither excessively or insufficiently. Thus, distortion correction processing to effectively use input(photographic) image data being original data can be performed, and effective distortion correction processing can be performed even to bobbin-shaped distortion, barrel-shaped distortion or soldier's helmet-shaped distortion.

Description

Technical field [0001] The present invention mainly relates to an image processing device and an image processing method used in an electronic imaging device such as a digital camera, and specifically relates to a distortion correction function that can be realized without increasing the circuit scale and the amount of data transmission, and is used in a small area (such as a block). In the case of distortion correction processing in units of lines, an image processing device, image processing method, and distortion correction method that can calculate the spatial position of a small area. Background technique [0002] Regardless of whether it is a digital camera or a silver salt camera, distortion aberrations generally occur in the optical system of the camera. In addition, most of the cameras currently on the market are models that can perform optical zoom. In this case, the state of distortion aberration changes from the wide-angle end to the telephoto end. There is much barre...

Claims

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Application Information

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IPC IPC(8): G06T3/00H04N1/387H04N5/232G09G5/36G06T1/20
Inventor 日暮正树古川英明上野晃
Owner OLYMPUS CORP
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