Patent ID: 8363115
Filing Date: 2013-01-29
Classification: H04N

Abstract:
1. A device for digital image stabilization for removing unwanted camera movements, called jitter, from an original sequence of images generated by said camera and obtaining a stabilized sequence of images, said original sequence being applied to a stabilization algorithm module, in order to remove said jitter, said device comprising: an initial stage with a first motion filter having a first set of predetermined characteristics, a default filter, and at least one alternative motion filter having a second set of predetermined characteristics, said filters being implemented in said stabilization algorithm; a first stage in which a global motion of said camera and filtering said global motion with said default motion filter is estimated; a second stage in which predetermined parameters from both said original and stabilized sequences are extracted and a measure value, called a mark, is generated, in order of evaluating stabilization quality; and a third stage in which said mark is compared to a predetermined threshold and a first control signal is generated if said threshold is exceeded, otherwise a second control signal is generated, said first control signal forcing said stabilization algorithm module to use an alternative filter, in order to improve stabilization quality, and said second control signal forcing stabilization algorithm to continue to use said default filter.