Image processing apparatus and image processing method
First Claim
Patent Images
1. An image processing apparatus comprising:
- an image processing unit that executes image processing on an input image;
a point light source detection unit that detects a point light source included in the input image;
a scene determination unit that determines whether or not the input image shows a vivid scene based on a detection result of the point light source detection unit and an image signal of the input image; and
a control unit that controls the image processing unit to change image processing for the input image in accordance with a determination result of the scene determination unit,wherein the point light source detection unit divides the input image into a plurality of small areas, compares photometric values of the small areas with one another, and determines that a point light source has been detected in a case where any of the small areas has a higher photometric value than peripheral small areas and an average of the photometric values of the small areas is smaller than a predetermined threshold value.
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Abstract
An image processing apparatus includes: an image processing unit that executes image processing on an input image; a point light source detection unit that detects a point light source included in the input image; a scene determination unit that determines whether or not the input image shows a vivid scene based on a detection result of the point light source detection unit and an image signal of the input image; and a control unit that controls the image processing unit to change image processing for the input image in accordance with a determination result of the scene determination unit.
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Citations
13 Claims
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1. An image processing apparatus comprising:
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an image processing unit that executes image processing on an input image; a point light source detection unit that detects a point light source included in the input image; a scene determination unit that determines whether or not the input image shows a vivid scene based on a detection result of the point light source detection unit and an image signal of the input image; and a control unit that controls the image processing unit to change image processing for the input image in accordance with a determination result of the scene determination unit, wherein the point light source detection unit divides the input image into a plurality of small areas, compares photometric values of the small areas with one another, and determines that a point light source has been detected in a case where any of the small areas has a higher photometric value than peripheral small areas and an average of the photometric values of the small areas is smaller than a predetermined threshold value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An image processing apparatus comprising:
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an image processing unit that executes image processing on an input image; a point light source detection unit that detects a point light source included in the input image; a scene determination unit that determines whether or not the input image shows a vivid scene based on a detection result of the point light source detection unit and an image signal of the input image; and a control unit that controls the image processing unit to change image processing for the input image in accordance with a determination result of the scene determination unit, wherein the point light source detection unit divides the input image into a plurality of small areas, calculates the number of small areas that have a higher photometric value than peripheral small areas based on photometric values of the small areas, and determines that a point light source has been detected when the calculated number is equal to or greater than a predetermined threshold value.
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10. An image processing method comprising:
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an image processing step of executing image processing on an input image; a point light source detection step of detecting a point light source included in the input image; a scene determination step of determining whether or not the input image shows a vivid scene based on a detection result of the point light source detection step and an image signal of the input image; and a control step of controlling the image processing unit to change image processing for the input image in accordance with a determination result of the scene determination step, wherein in the point light source detection step, dividing the input image into a plurality of small areas, comparing photometric values of the small areas with one another, and determining that a point light source has been detected in a case where any of the small areas has a higher photometric value than peripheral small areas and an average of the photometric values of the small areas is smaller than a predetermined threshold value.
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11. An image processing method comprising:
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an image processing step of executing image processing on an input image; a point light source detection step of detecting a point light source included in the input image; a scene determination step of determining whether or not the input image shows a vivid scene based on a detection result of the point light source detection step and an image signal of the input image; and a control step of controlling the image processing unit to change image processing for the input image in accordance with a determination result of the scene determination step, wherein in the point light source detection step, dividing the input image into a plurality of small areas, calculating the number of small areas that have a higher photometric value than peripheral small areas based on photometric values of the small areas, and determining that a point light source has been detected when the calculated number is equal to or greater than a predetermined threshold value.
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12. An image processing apparatus comprising:
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an image processing unit that executes image processing on an input image; a point light source detection unit that detects a point light source included in the input image; a scene determination unit that determines whether or not the input image shows a vivid scene based on a detection result of the point light source detection unit and an image signal of the input image; and a control unit that controls the image processing unit to change image processing for the input image in accordance with a determination result of the scene determination unit, wherein the point light source detection unit divides the input image into a plurality of small areas and determines that a point light source has been detected based on the number of the small areas in which an evaluate value of photometric values is higher than that of peripheral small areas.
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13. An image processing method comprising:
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an image processing step of executing image processing on an input image; a point light source detection step of detecting a point light source included in the input image; a scene determination step of determining whether or not the input image shows a vivid scene based on a detection result of the point light source detection step and an image signal of the input image; and a control step of controlling the image processing unit to change image processing for the input image in accordance with a determination result of the scene determination step, wherein in the point light source detection step, dividing the input image into a plurality of small areas and determining that a point light source has been detected based on the number of the small areas in which an evaluate value of photometric values is higher than that of peripheral small areas.
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Specification