Image processing device and image processing method
AssigneeMitsubishi Electric Corporation
InventorsMasashi Tamura, Narihiro Matoba
Life of this patent
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Abstract
An output value calculating unit 5 performs weighting arithmetic operations on a plurality of filter values calculated by a filter value calculating unit 4 by using a feature quantity detected by a feature quantity detecting unit 1, a directional correlation value calculated by a directional correlation value calculating unit 2 and an amplitude level calculated by an amplitude level calculating unit 3, and multiplies a result of the weighting arithmetic operations by a sensitization magnification to create pixel signals of a correctly exposed image.
Claims6
An image processing device comprising:
- a feature quantity detecting unit for detecting a feature quantity of an object to be photographed which exists around an aimed pixel in a two-dimensional image;
- a directional correlation value calculating unit for calculating a directional correlation value of the object to be photographed which exists around said aimed pixel from the feature quantity detected by said feature quantity detecting unit;
- a filter value calculating unit for referring to a pixel signal of said aimed pixel and pixel signals of neighboring pixels in a neighborhood of said aimed pixel to calculate a plurality of filter values;
- and
- a correctly exposed image creating unit for performing weighting arithmetic operations on the plurality of filter values calculated by said filter value calculating unit by using the feature quantity detected by said feature quantity detecting unit and the directional correlation value calculated by said directional correlation value calculating unit, and for multiplying a result of said weighting arithmetic operations by a sensitization magnification to create pixel signals of a correctly exposed image.
An image processing method comprising:
- a feature quantity detecting step of a feature quantity detecting unit detecting a feature quantity of an object to be photographed which exists around an aimed pixel in a two-dimensional image;
- a directional correlation value calculating step of a directional correlation value calculating unit calculating a directional correlation value of the object to be photographed which exists around said aimed pixel from the feature quantity detected by said feature quantity detecting unit;
- a filter value calculating step of a filter value calculating unit referring to a pixel signal of said aimed pixel and pixel signals of neighboring pixels in a neighborhood of said aimed pixel to calculate a plurality of filter values;
- and
- a correctly exposed image creating step of a correctly exposed image creating unit performing weighting arithmetic operations on the plurality of filter values calculated by said filter value calculating unit by using the feature quantity detected by said feature quantity detecting unit and the directional correlation value calculated by said directional correlation value calculating unit, and for multiplying a result of said weighting arithmetic operations by a sensitization magnification to create pixel signals of a correctly exposed image.
Dependencies are inferred from the claim text.