摘要:
An encoded code stream is searched for a frame generally coincident with a specific frame without having to decoding the frame to its original image. The present invention provides an image search device that searches an object encoded code stream formed by compression coding of a plurality of frames for a frame generally coincident with a specific one, which includes a decoder for making entropy decoding of the object encoded code stream to generate quantization coefficients of each frame, a matching unit for making matching between the quantization coefficients of the specific frame and those of each frame which are generated by the decoder and correspond in sample position to those of the specific frame, and a judging unit for judging, based on the result of matching, whether the frame is generally coincident with the specific one.
摘要:
There is provided an image processing apparatus including a zero class detecting unit that detects a zero class in which an appearance frequency of a pixel value is zero from among a plurality of classes into which pixel values of an image are classified according to pixel value magnitude, and a non-zero class converting unit that converts the zero class into a non-zero class in which the appearance frequency of the pixel value is one or more, without updating a total number of the classes, by updating a range of the zero class detected by the zero class detecting unit. The present disclosure can be applied to an image processing apparatus.
摘要:
An encoded code stream is searched for a frame generally coincident with a specific frame without having to decoding the frame to its original image. The present invention provides an image search device that searches an object encoded code stream formed by compression coding of a plurality of frames for a frame generally coincident with a specific one, which includes a decoder for making entropy decoding of the object encoded code stream to generate quantization coefficients of each frame, a matching unit for making matching between the quantization coefficients of the specific frame and those of each frame which are generated by the decoder and correspond in sample position to those of the specific frame, and a judging unit for judging, based on the result of matching, whether the frame is generally coincident with the specific one.
摘要:
There is provided an image processing apparatus including: a first color transform unit carrying out a color transform on a combination of color components with high correlation out of a plurality of color components included in image data; and a second color transform unit carrying out a color transform on a combination of color components aside from the combination of color components subjected to the color transform by the first color transform unit out of the plurality of color components included in the image data.
摘要:
An encoded code stream is searched for a frame generally coincident with a specific frame without having to decoding the frame to its original image. The present invention provides an image search device that searches an object encoded code stream formed by compression coding of a plurality of frames for a frame generally coincident with a specific one, which includes a decoder for making entropy decoding of the object encoded code stream to generate quantization coefficients of each frame, a matching unit for making matching between the quantization coefficients of the specific frame and those of each frame which are generated by the decoder and correspond in sample position to those of the specific frame, and a judging unit for judging, based on the result of matching, whether the frame is generally coincident with the specific one.
摘要:
A coding parameter extracting unit extracts and supplies coding parameters of a code stream to an image characteristic amount output unit. A code stream characteristic amount extracting unit outputs a first vector calculated based on the number of zero bit planes for each code block extracted by analyzing the code stream. The image characteristic amount output unit uses the coding parameters other than a quantization step size of the code stream to output a second vector calculated based on the number of zero bit planes for each code block of a specific image. A comparing unit compares the first and second vectors for each code block and makes a matching decision between the code stream and the specific image.
摘要:
There is provided an image processing apparatus which includes a division unit dividing an image into a plurality of images in a bit depth direction, and an encoding unit encoding respectively some or all of the plurality of images acquired by dividing the image in the bit depth direction by the division unit.
摘要:
Provided is an image processing apparatus which includes a histogram generating unit that generates a histogram representing an appearance frequency distribution of a pixel value of an input image, and a quantization table generating unit that generates a quantization table including table information used to perform transform of a bit depth of the pixel value of the input image and table information used to allocate an effective pixel in which an appearance frequency in the histogram generated by the histogram generating unit is not zero to an index value after bit depth transform so that effective pixels are allocated to index values as equally as possible.
摘要:
There is provided an image processing device which transforms an image with a bit depth of N into an upper layer with a bit depth of M and a remaining lower layer, including a histogram unit that generates histogram indicating occurrence frequency of each pixel value of an image with a bit depth of N, a table unit that generates a table listing pixel values of which occurrence frequency in the histogram generated by the histogram unit is equal to or more than one, a reordering unit that reorders an arrangement of values in the histogram using the table generated by the table unit, an update unit that updates the table generated by the table unit and the histogram reordered by the reordering unit; and an index image unit that generates an index image with a bit depth of N using the updated table and the updated histogram.
摘要:
A coding parameter extracting unit extracts and supplies coding parameters of a code stream to an image characteristic amount output unit. A code stream characteristic amount extracting unit outputs a first vector calculated based on the number of zero bit planes for each code block extracted by analyzing the code stream. The image characteristic amount output unit uses the coding parameters other than a quantization step size of the code stream to output a second vector calculated based on the number of zero bit planes for each code block of a specific image. A comparing unit compares the first and second vectors for each code block and makes a matching decision between the code stream and the specific image.