Image processing apparatus and method, recording medium, and program
First Claim
1. An image processing apparatus comprising:
- range setting means for setting one or more extraction ranges constituting first ranges having not more than a specified first width of pixel values of first pixel data that is input; and
image data production means for producing one or more sets of second image data by extracting pixels having pixel values contained in the extraction ranges from the first image data.
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Abstract
It is an object of the present invention to allow easier acquisition of image data having the necessary luminosity range. The pixel value distribution detecting unit detects the distribution of the pixel values of the input image data, constituted by pixel values that are substantially proportional to the logarithm of the quantity of incident light. The extraction range setting means sets one or more extraction ranges, which are ranges of predetermined pixel values and have the same width, on the basis of the distribution of the pixel values of the input image data. The image extraction unit produces processed image data by extracting pixels having pixel values contained in the extraction ranges from the input image data, and supplies the processed image data thus produced to the image detecting unit. The present invention can be used in image detection devices.
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Citations
22 Claims
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1. An image processing apparatus comprising:
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range setting means for setting one or more extraction ranges constituting first ranges having not more than a specified first width of pixel values of first pixel data that is input; and
image data production means for producing one or more sets of second image data by extracting pixels having pixel values contained in the extraction ranges from the first image data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An image processing method comprising:
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a range setting step for setting one or more extraction ranges that are equal to or less than a specified width of pixel values of first image data that is input; and
an image data production step in which one or more sets of second image data are produced by extracting pixels whose pixel values are contained in the extraction ranges, from the first image data.
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21. A program comprising:
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a range setting step for setting one or more extraction ranges that are equal to or less than a specified width of pixel values of first image data that is input; and
an image data production step in which one or more sets of second image data are produced by extracting pixels whose pixel values are contained in the extraction ranges, from the first image data. - View Dependent Claims (22)
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Specification