Patent ID: 9105082
Filing Date: 2015-08-11
Classification: G06T

Abstract:
1. A high speed filtering apparatus for high precision restoration of a depth image, the apparatus comprising: a block setting unit to set a first block including a target pixel, and to set a second block with respect to a central pixel distributed around the target pixel, based on a size of the first block; a weight determining unit to determine a pixel weight of each pixel in the second block, and to determine a block weight of the second block by applying the pixel weight determined for each of the pixels in the second block; and a processor to filter the target pixel based on the block weight wherein the weight determining unit determines, as the pixel weight, a first reliability as a central pixel weight with respect to the central pixel, and a second reliability calculated based on the first reliability, as a neighboring pixel weight with respect to a neighboring pixel included in the second block; and the first reliability correspond to a frequency of pixel brightness corresponding to the central pixel, based on distribution of pixel brightness corresponding to the neighboring pixel included in the second block wherein the block setting unit assigns coordinates to a pixel in the first block based on the target pixel, and assigns coordinates to a pixel in the second block based on the central pixel, and the weight determining unit calculates a pixel similarity between the pixel in the second block and the pixel in the first block, and determines the block weight based on a block similarity obtained by calculating a sum of pixel similarities calculated with respect to each pixel in the second block and each pixel in the first block.