Abstract:
A pixel defect detecting/correcting device which is not limited in the number of correctable defective pixels by the capacity of a recording unit and can detect/correct delayed defects, the device comprising a color difference and luminance calculating block (1-2) for calculating the color difference absolute value, color difference and luminance data of an adjacent pixel and a pixel subjected to defect judging, a block (1-3) for detecting the maximum value and minimum value of various kinds of data from values calculated from a color difference and a luminance, a color difference interpolation value calculating block (1-4) and a luminance interpolation value calculating block (1-5) for obtaining the color difference interpolation value and luminance interpolation value of a pixel subjected to defect judging, a defect judging and interpolating block (1-6) for concurrently judging for defects a pixel subjected to defect judging using a plurality of defect detecting methods and under respective defect detecting methods, and, if a defective pixel is found, conducting interpolation according to a relevant defect detecting method, and a using interpolation value selecting block (1-7) for selecting the final output value of a pixel judged to be defective.
Abstract:
An image signal processing device (1) processes the output signal of a CCD image sensor (10) for reading pixel information of one frame in units of one line, dividing the pixel information, into a plurality of channels, and thereby outputting the divided information. The image signal processing device (1) determines the black level of the pixel data read from the image sensor (10) for each channel, and corrects the black level for each channel. Moreover, the image signal processing device (1) determines the gain difference of the pixel data between the channel and corrects the gain difference between the channels. Therefore, for the image sensor for dividing the image information into channels and outputting them the black level and the gain difference between channels can be corrected highly precisely.
Abstract:
PROBLEM TO BE SOLVED: To accurately correct the black level and gain difference between channels to an image sensor for dividing image information into plural of channels for outputting. SOLUTION: The image signal processor 1 processes the output signal of the CCD image sensor 10, that reads the pixel information of one screen in line units and divides the pixel read in line units into the left and the right channels for outputting. Also, the image signal processor 1 detects the black level of the pixel data, being read from the image sensor 10 independently to the right and left, corrects the black level for each channel, and integrates the gain difference between right and left channels of the pixel data read from the image sensor over plural lines for detecting, and corrects the gain difference between the channels.
Abstract:
PROBLEM TO BE SOLVED: To appropriately set the strength of noise reduction, for example.SOLUTION: An image processing device comprises: a noise reduction strength setting unit that sets the strength of noise reduction for removing a predetermined noise component; and a noise reduction strength correction unit that corrects the strength of noise reduction on the basis of correction data obtained in accordance with an edge rate.
Abstract:
PROBLEM TO BE SOLVED: To suitably use a signal that indicates that a face was recognized in face detection, in addition to an image brightness signal and a color difference signal for the postprocessing of a face area. SOLUTION: This apparatus is applicable to a system which, using fixed-length data with a brightness signal and a color difference signal, performs a face detection process and postprocessing on an area determined to be likely a face in the face detection process. A new detection signal is added to the brightness signal and the color difference signal with a fixed input data length in a postprocessing circuit, and not the data length is increased but the data length of the brightness or color difference signal is reduced to match the specifications and the performance of the postprocessing circuit without changing the fixed data length. That portion is merged with information newly obtained through the face detection process. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a pixel defect detecting/correcting apparatus and a method therefor, in which the number of correctable defective pixels is not limited by the capacity of a recording device and also which can detect/correct pixels which get defective later. SOLUTION: The pixel defect detecting/correcting apparatus is equipped with a color difference/luminance calculation block 1-2 which calculates data on the absolute value of a color difference between an adjacent pixel and a defective pixel as an object of discrimination, a color difference, and luminance, a various data maximum/minimum value detection block 1-3 which detects the maximum and minimum value of the various data out of values calculated from the color differences and luminance, a color difference interpolator calculation block 1-4 which obtains the color difference interpolator and the luminance interpolator of the defective pixel as an object of discrimination, a luminance interpolator calculation block 1-5, a defect discriminating and interpolation processing block 1-6 which determines whether the defective pixel as an object of discrimination is defective or not through each of defect detecting methods and executes interpolation processing corresponding to the defect detecting methods if the pixel is found defective. Furthermore, a used interporator electing block 1-7 which selects the final output value of the pixel that is discriminated to be defective is provided. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a solid-state imaging device having two channel output for correcting the gain, such that the output levels become substantially uniform. SOLUTION: The solid-state imaging device comprises a solid-state image sensor 10 for outputting imaging signals simultaneously from a plurality of output sections, means 15 for detecting the level difference between respective imaging signals at a plurality of levels thereof, means 24 for storing each detection result of the detecting means 15, and means 19 determining each regulation value, such that the level of respective imaging signals is substantially equalized, based on each detection result of the storing means 24 and then regulating the level of each imaging signal with each regulation value.