Method and apparatus for tracking image patch considering scale
AssigneeSamsung Electronics Co., Ltd.
InventorsKi-wan Choi, Hyoung-ki Lee, Ji-young Park
Life of this patent
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Abstract
A method and apparatus for tracking an image considering scale are provided. A registered image patch may be divided into a scale-invariant image patch and a scale-variant image patch according to a predetermined scale invariance index (SII). If a registered image patch within an image is a scale-invariant image patch, the scale-invariant image patch is tracked by adjusting its position, while if the registered image patch is a scale-variant image patch, the scale-invariant image patch is tracked by adjusting its position and scale.
Claims8
An image patch tracker comprising:
- a scale invariance index (SII) calculating unit calculating an SII based on a pixel value change with respect to a scale change for a registered image patch;
- and
- a scale characteristic deciding unit comparing the SII to a threshold and selectively determining the registered image patch to be one of a scale-invariant image patch, when the SII is less than the threshold, and a scale-variant image patch, when the SII is not less than the threshold.
A method of tracking an image patch considering scale, comprising:
- calculating a scale invariance index (SII) based on a pixel value change with respect to a scale change for a registered image patch;
- and
- comparing the SII to a threshold and selectively determining the registered image patch to be one of a scale-invariant image patch, when the SII is less than the threshold, and a scale-variant image patch, when the SII is not less than the threshold.
Dependencies are inferred from the claim text.