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1. US20150103212 - Image processing device, method of processing image, and image processing program including false color correction

Office
United States of America
Application Number 14395095
Application Date 14.02.2013
Publication Number 20150103212
Publication Date 16.04.2015
Grant Number 09288457
Grant Date 15.03.2016
Publication Kind B2
IPC
H04N 9/64
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
9Details of colour television systems
64Circuits for processing colour signals
H04N 9/04
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
9Details of colour television systems
04Picture signal generators
G06T 5/00
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
5Image enhancement or restoration
G06T 5/20
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
5Image enhancement or restoration
20by the use of local operators
G06T 3/40
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
3Geometric image transformation in the plane of the image
40Scaling of a whole image or part thereof
CPC
G06T 7/90
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7Image analysis
90Determination of colour characteristics
G06K 9/4652
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
36Image preprocessing, i.e. processing the image information without deciding about the identity of the image
46Extraction of features or characteristics of the image
4652related to colour
G06K 9/4661
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
36Image preprocessing, i.e. processing the image information without deciding about the identity of the image
46Extraction of features or characteristics of the image
4661related to illumination properties, e.g. according to a reflectance or lighting model
G06K 9/6215
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
62Methods or arrangements for recognition using electronic means
6201Matching; Proximity measures
6215Proximity measures, i.e. similarity or distance measures
G06K 2009/4666
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
36Image preprocessing, i.e. processing the image information without deciding about the identity of the image
46Extraction of features or characteristics of the image
4666regional/local feature not essentially salient, e.g. local binary pattern
G06T 3/4015
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
3Geometric image transformation in the plane of the image
40Scaling the whole image or part thereof
4015Demosaicing, e.g. colour filter array [CFA], Bayer pattern
Applicants Sony Corporation
Inventors Yasushi Saito
Agents Wolf, Greenfield & Sacks, P.C.
Priority Data 2012-098544 24.04.2012 JP
Title
(EN) Image processing device, method of processing image, and image processing program including false color correction
Abstract
(EN)

There are provided a device and method that correct a false color occurring in a locally highlighted region in an image. A false color pixel is detected in data conversion processing of generating an RGB array image from an RGBW array image, low-band signals corresponding to respective RGBW colors that are different according to whether a pixel is a false color pixel, and the RGBW array is converted by interpolation processing to which the calculated low-band signals are applied to generate the RGB array image. The interpolation processing is performed using the low-band signals on an assumption that a W low-band signal mW, and RGB respective low-band signals mR, mG, and mB have a proportional relation in a local region. When a pixel of interest is a false color pixel, the low-band signal is calculated by an application of a low-pass filter having a coefficient in which a contribute rate of pixel values in the vicinity of the pixel of interest is made relatively lower than that of separated pixels.