Image processing apparatus and imaging device
First Claim
1. An image processing apparatus comprising:
- a first image generator that generates each of a plurality of first images by applying a smoothing filter to each of a plurality of input images of a single object picked up with various sensitivities;
a second image generator that generates each of a plurality of second images by dividing a pixel value of each pixel of the each input image by a pixel value of a collocated pixel of the each first image;
a third image generator that generates a third image by adding pixel values of collocated pixels in the first images;
a fourth image generator that generates a fourth image by multiplying pixel values of collocated pixels in the second images; and
an output image generator that generates an output image by multiplying a pixel value of each pixel of the third image and a pixel value of a collocated pixel of the fourth image.
1 Assignment
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Accused Products
Abstract
An image processing apparatus generates a brightness component image of a low-sensitivity image by applying a smoothing filter to the low-sensitivity image, generates a brightness component image of a high-sensitivity image by applying the smoothing filter to the high-sensitivity image, generates a contrast component image of the low-sensitivity image by dividing the low-sensitivity image by the brightness component image of the low-sensitivity image, generating a contrast component image of the high-sensitivity image by dividing the high-sensitivity image by the brightness component image of the high-sensitivity image, generates a combined brightness component image by combining the brightness component images of the low-sensitivity image and of the high-sensitivity image, generates a combined contrast component image by combining the contrast component images of the low-sensitivity image and of the high-sensitivity image, and finally generates a contrast-expanded image by multiplying the combined brightness component image and the combined contrast component image.
26 Citations
11 Claims
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1. An image processing apparatus comprising:
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a first image generator that generates each of a plurality of first images by applying a smoothing filter to each of a plurality of input images of a single object picked up with various sensitivities; a second image generator that generates each of a plurality of second images by dividing a pixel value of each pixel of the each input image by a pixel value of a collocated pixel of the each first image; a third image generator that generates a third image by adding pixel values of collocated pixels in the first images; a fourth image generator that generates a fourth image by multiplying pixel values of collocated pixels in the second images; and an output image generator that generates an output image by multiplying a pixel value of each pixel of the third image and a pixel value of a collocated pixel of the fourth image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An image processing method comprising:
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generating each of a plurality of first images by applying a smoothing filter to each of a plurality of input images of a single object picked up with various sensitivities; generating each of a plurality of second images by dividing a pixel value of each pixel of the each input image by a pixel value of a collocated pixel of the each first image; generating a third image by adding pixel values of collocated pixels in the first images; generating a fourth image by multiplying pixel values of collocated pixels in the second images; and generating an output image by multiplying a pixel value of each pixel of the third image and a pixel value of a collocated pixel of the fourth image.
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Specification