Image processing apparatus
AssigneeShimadzu Corporation
InventorSusumu Adachi
Life of this patent
Estimating the term…
Abstract
An apparatus for processing a two-dimensional image obtained by scanning sensor arrays of image detectors perpendicular thereto, the apparatus including an image memory for storing pixel data output by the image detector as a two-dimensional image, a first read-out unit for reading the stored pixel data about a particular detector in a particular array, a second read-out unit for reading pixel data in the neighborhood of the pixel data read by the first read-out unit, a first arithmetic unit for measuring the magnitude of difference in sensitivity between the detector whose pixel data is read by the first read-out unit and the detector whose pixel data is read by the second read-out unit, and a second arithmetic unit for compensating for the deficiency of sensitivity on the basis of the output of the first arithmetic unit.
Claims3
An apparatus for processing a two-dimensional image obtained by scanning sensor arrays of image detectors perpendicular thereto, the apparatus comprising:
- an image memory for storing pixel data output by the image detector as a two-dimensional image;
- a first read-out means for reading the stored pixel data about a particular detector in a particular array;
- a second read-out means for reading pixel data in the neighborhood of the pixel data read by the first read-out means;
- a comparing arithmetic means for measuring the magnitude of difference in sensitivity between the detector whose pixel data is read by the first read-out means and the detector whose pixel data is read by the second read-out means;
- and
- a calculating arithmetic means for compensating for the deficiency of sensitivity on a basis of the output of the comparing arithmetic means, wherein the second read-out means comprises a pair of data buses through which data about adjacent pixels located on each side of the pixel whose data is read by the first read-out means, and wherein the apparatus further comprises a first median arithmetic means and a second median arithmetic means coupled to said image memory and said comparing arithmetic means, said first and second median arithmetic means for calculating a median or a mean value of data about the pixels read by the data buses, and for generating outputs corresponding to the calculated median or mean value to the comparing arithmetic means.
An apparatus for processing a two-dimensional image obtained by scanning sensor arrays of image detectors perpendicular thereto, the apparatus comprising:
- an image memory for storing pixel data output by the image detector as a two-dimensional image:
- a first read-out means for reading the stored pixel data about a particular detector in a particular array;
- a second read-out means for reading pixel data in the neighborhood of the pixel data read by the first read-out means;
- a comparing arithmetic means for measuring the magnitude of difference in sensitivity between the detector whose pixel data is read by the first read-out means and the detector whose pixel data is read by the second read-out means;
- a calculating arithmetic means for compensating for the deficiency of sensitivity on a basis of the output of the comparing arithmetic means;
- and
- a first counter and a second counter both connected to the image memory, wherein the first counter indicates the position of the pixels along the array to which they belong and the second counter indicates the position of the pixels in a direction in which the arrays are scanned, wherein the second read-out means comprises a pair of data buses through which data about adjacent pixels located on each side of the pixel whose data is read by the first read-out means, and wherein the apparatus further comprises a first median arithmetic means and a second median arithmetic means coupled to said image memory and said comparing arithmetic means, said first and second median arithmetic means for calculating a median or a mean value of data about the pixels read by the data buses, and for generating outputs corresponding to the calculated median or mean value to the comparing arithmetic means.
Dependencies are inferred from the claim text.