| US 9,811,887 B2 | ||
| Apparatus and method for image stabilization using image blur correction | ||
| Seungho Shin, Incheon (KR) | ||
| Assigned to SK TELECOM CO., LTD., Seoul (KR) | ||
| Filed by SK TELECOM CO., LTD., Seoul (KR) | ||
| Filed on Mar. 14, 2016, as Appl. No. 15/69,212. | ||
| Application 15/069,212 is a continuation of application No. PCT/KR2014/008564, filed on Sep. 15, 2014. | ||
| Claims priority of application No. 10-2013-0111366 (KR), filed on Sep. 16, 2013. | ||
| Prior Publication US 2016/0196639 A1, Jul. 7, 2016 | ||
| Int. Cl. G06T 5/00 (2006.01); H04N 5/232 (2006.01); G06K 9/46 (2006.01); G06K 9/62 (2006.01); G06T 5/40 (2006.01); G06T 7/20 (2017.01); G06T 7/238 (2017.01); G06T 7/246 (2017.01) | ||
| CPC G06T 5/003 (2013.01) [G06K 9/4609 (2013.01); G06K 9/4652 (2013.01); G06K 9/4661 (2013.01); G06K 9/6202 (2013.01); G06T 5/40 (2013.01); G06T 7/20 (2013.01); G06T 7/238 (2017.01); G06T 7/246 (2017.01); H04N 5/23254 (2013.01); H04N 5/23267 (2013.01); G06T 2207/10024 (2013.01); G06T 2207/20021 (2013.01); G06T 2207/20201 (2013.01)] | 16 Claims |
| 1. An apparatus for stabilizing an image based on a correction of a blur of the image, the apparatus comprising:
an image receiving unit, implemented by one or more processors, configured to receive the image;
a block dividing unit, implemented by one or more processors, configured to divide a frame of the image into blocks, and merge
the blocks having similar object distributions based on a density of edges and histogram distribution characteristics in each
of the blocks;
an image analyzing unit, implemented by one or more processors, configured to analyze characteristics of each block to calculate
a weight of each block by calculating an object distribution based on the density of edges and histogram distribution characteristics
of each of the blocks;
a significant block extracting unit, implemented by one or more processors, configured to
extract, from the blocks, a block having a weight equal to or larger than a threshold value,
determine the extracted block to be a significant block;
a feature point extracting unit, implemented by one or more processors, configured to
extract pixels from the significant block, and
extract a feature point of an object in the significant block by comparing at least one of color and brightness between the
extracted pixels and neighboring pixels of the extracted pixels, wherein the feature point indicates a pixel corresponding
to a part of the object in the image;
a local motion vector calculating unit, implemented by one or more processors, configured to calculate at least one local
motion vector of at least one block corresponding to the feature point by referring a previous frame of the frame and estimating
a motion of the at least one block;
a global motion vector calculating unit, implemented by one or more processors, configured to calculate a global motion vector
based on the calculated at least one local motion vector of the at least one block; and
an image correcting unit, implemented by one or more processors, configured to correct output data of the frame based on the
global motion vector.
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