Method and system for generating panoramic images from video sequences
First Claim
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1. A method of generating panoramic images from a motion-compensated inter-frame encoded video sequence, the method comprising:
- positioning the image of each frame of the sequence on a panoramic image reference plane, such that the respective images of each frame are in registration with each other, and one or more pixel values are available for each pixel position in the reference plane; and
for each pixel position in the reference plane, selecting one of the available pixel values for use as the pixel value in the panoramic image;
the method being characterised in that the selecting step further comprises selecting a substantially median pixel value from the available pixel values for use in a background panoramic image and/or selecting a substantially most different pixel value from the available pixel values for use in a foreground panoramic image.
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Abstract
The invention relates to generating panoramic images of foreground and background panorama. Within mosaiced panoramic images there will often be more than one pixel value available for each pixel position. In the invention pixel values for a foreground panoramic image are selected by taking the most extraordinary pixel as foreground, and pixel values for a background image are selected by taking a median pixel value. We have found that such pixel selection gives improved results with respect to the prior art.
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9 Claims
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1. A method of generating panoramic images from a motion-compensated inter-frame encoded video sequence, the method comprising:
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positioning the image of each frame of the sequence on a panoramic image reference plane, such that the respective images of each frame are in registration with each other, and one or more pixel values are available for each pixel position in the reference plane; and
for each pixel position in the reference plane, selecting one of the available pixel values for use as the pixel value in the panoramic image;
the method being characterised in that the selecting step further comprises selecting a substantially median pixel value from the available pixel values for use in a background panoramic image and/or selecting a substantially most different pixel value from the available pixel values for use in a foreground panoramic image. - View Dependent Claims (2, 3, 4, 5)
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6. A system for generating panoramic images from a motion-compensated inter-frame encoded video sequence, comprising:
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image registration means for positioning the image of each frame of the sequence on a panoramic image reference plane, such that the respective images of each frame are in registration with each other, and one or more pixel values are available for each pixel position in the reference plane; and
pixel selection means arranged in use, for each pixel position in the reference plane, to select one of the available pixel values for use as the pixel value in the panoramic image;
the system being characterised in that the pixel selection means further comprises background pixel selection means for selecting a substantially median pixel value from the available pixel values for use in a background panoramic image and/or foreground pixel selection means for selecting a substantially most different pixel value from the available pixel values for use in a foreground panoramic image. - View Dependent Claims (7, 8, 9)
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Specification