Image processing method for movement detection and compensation
AssigneeVisidon Oy
InventorsMatti Niskanen, Markus Turtinen
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Abstract
An image processing method for improving image quality selects one of a plurality of two-dimensional pixel matrix source images of an imaged target as a reference image. Movement of the target is detected in the source images. The detected movement between the reference image and at least one other image of the source images is compensated differently in at least two different sections of the at least one other source image. The reference image and the movement compensated at least one other image are combined for forming an improved image.
Claims10
An image processing method for improving image quality, the method comprising:
- selecting one of a plurality of two-dimensional pixel matrix source images of an imaged target as a reference image;
- searching for common points in the source images which correspond to each other;
- detecting movement of the imaged target in the source images by forming a movement estimate for a pixel in a section of at least one source image by weighting a movement vector of the pixel on a basis of a distance from the common points in the section and a recoding moment of the section;
- compensating the detected movement between the reference image and the at least one source image differently in at least two different sections of the at least one source image on a basis of an order of recording moments of the at least two different sections;
- and
- combining the reference image and the detected movement compensated at least one source image for forming an improved image.
An apparatus for improving quality of an image, the apparatus comprising at least one processor programmed to:
- select one of a plurality of two-dimensional pixel matrix source images of an imaged target as a reference image;
- search for common points in the source images which correspond to each other;
- detect movement of the imaged target in the source images by forming a movement estimate for a pixel in a section of at least one source image by weighting a movement vector of the pixel on a basis of a distance from the common points in the section and a recoding moment of the section;
- compensate the detected movement between the reference image and the at least one source image differently in at least two different sections of the at least one source image on a basis of an order of recording moments of the at least two different sections;
- and
- combine the reference image and the detected movement compensated at least one source image for forming an improved image.
Dependencies are inferred from the claim text.