Patent application number | Description | Published |
20080211968 | Image Processor and Image Display Apparatus Comprising the Same - An image processor includes a motion vector acquisition section for acquiring and outputting an image motion vector in pixel or a predetermined block unit from plural frames included in an input image signal; and a frame interpolation section for generating an interpolated frame by using the motion vector provided by the motion vector acquisition section and for combining the interpolated frame with a frame of the input image signal, thereby composing a signal of a new frame sequence. The motion vector acquisition section includes a first motion vector acquisition section acquiring a motion vector by matching process and a second motion vector acquisition section acquiring a motion vector based on a relative misalignment of a predetermined edge component between two temporally successive frames in a specific area of an input image signal's frame. | 09-04-2008 |
20090103816 | Method and Device of Image Encoding and Image Processing Apparatus - Provided is an image encoding method and device capable of encoding moving image random allowing access with low delay and high compression. The image encoding method which inputs image data and encodes the image data using a reference picture about the image data and a difference between the reference picture and the image data, and performs the steps of: setting an image output availability parameter indicating that it is possible to decode the image data to output the same if past pictures fall within a fixed range have been decoded, when decoding the image data which has been encoded; calculating influenced range information indicating a range where pictures encoded in the past influence a target picture to be encoded when encoding the image data; and controlling a range of the reference picture upon encoding such that the influenced range information calculated does not exceed the image output availability parameter. | 04-23-2009 |
20090316787 | MOVING IMAGE ENCODER AND DECODER, AND MOVING IMAGE ENCODING METHOD AND DECODING METHOD - A high-compression-ratio encoding and decoding technique is provided which enables random access image reproduction and which can prevent temporary decoding failure. A moving image encoder includes a substitute image generation section which generates a substitute image for a target area to be processed of an input image and a substitute image selection section which outputs information on the substitute image according to a reference image used at a prediction section. When the reference image used at the prediction section is an already encoded image, the substitute image selection section outputs the information on the substitute image to a variable-length encoding section. The variable-length encoding section encodes difference image data from a transform/quantization section into a variable-length code and generates an encoded stream by including the information on the substitute image in the variable-length code. | 12-24-2009 |
20100080288 | VIDEO COMPRESSION CODING METHOD AND APPARATUS - A first delay memory is input with an input image frame output from a ME (motion estimation) processor, and delays output to a first adder for carrying out a prediction residual generation process a predetermined time period. A second delay memory is input with an inter-prediction luminance image frame, and delays output to a prediction selection circuit a predetermined time period. A third delay memory is input with motion vector information output from the ME processor, and delays output of the motion vector information to an inter-prediction chrominance image creation processor a predetermined time period. | 04-01-2010 |
20100128792 | VIDEO DECODING METHOD - A method of decoding videos comprises the steps of performing, in respect of a decoding objective area of decoding objective frame, a motion search by using images of plural frames finished with decoding and deciding, on the basis of the result of the motion search, whether an image of the decoding objective area is to be generated through an interpolation process or a decoded image is to be generated through motion compensation using data included in an encoding stream. | 05-27-2010 |
20100135381 | ENCODING/DECODING DEVICE AND VIDEO TRANSMISSION SYSTEM - The present invention relates to a video transmission system that uses an encoding/decoding technique. An object of the present invention is to refrain from using a memory for storing decoded image data, avoid a decoder input buffer problem (buffer overflow or underflow) with ease, achieve cost reduction, and provide enhanced image quality. In the video transmission system with an encoding/decoding device, a reference signal for adjusting a synchronization schedule of the entire system is generated and supplied to various sections. In addition, a timing adjustment amount for adjusting the synchronization schedule for the reference signal is generated by a decoder and supplied to a camera. | 06-03-2010 |
20110110424 | Video Encoder and Data Processing Method - A video encoder for evaluating a prediction error by using a prediction technique include: an image encoding section which encodes a prediction image; and an encoding control device which selects any one of a plurality of prediction modes in prediction used by the image encoding section. The image encoding section performs clipping of higher-order bits of the prediction error input to the encoding control device and reduction of lower-order bits thereof for each of the prediction modes to control prediction mode selection, thus reducing the prediction error bit width to a predetermined bit width. The encoding control device sets to the image encoding section the number of higher-order bits to be clipped and the number of lower-order bits to be reduced. The predetermined bit width of the prediction error after bit width reduction is matched with the bus width used for prediction error transmission by the encoding control device and the image encoding section. | 05-12-2011 |
20110142133 | VIDEO ENCODING METHOD AND VIDEO DECODING METHOD - Provided is a video encoding/decoding technique for improving the compression efficiency by reducing the motion vector code amount. In a video decoding process, the prediction vector calculation method is switched from one to another in accordance with a difference between predetermined motion vectors among a plurality of motion vectors of a peripheral block of a block to be decoded and already decoded. The calculated prediction vector is added to a difference vector decoded from an encoded stream so as to calculate a motion vector. By using the calculated motion vector, the inter-image prediction process is executed. | 06-16-2011 |
20110249749 | Moving Picture Decoding Method and Moving Picture Encoding Method - High-quality video is provided using a small amount of coded bits. The moving picture decoding method performs inter-frame prediction processing. With the aforementioned inter-frame prediction processing, blocks with similar motion vectors from among the motion vectors in multiple blocks that have already been decoded are combined and a combined area is computed. A predicted vector for a target block to be decoded is computed using the motion vector of the aforementioned combined area, and a motion vector for the aforementioned target block is computed based on the aforementioned predicted vector and a difference vector which is included in a coded stream that is input. A predicted image is generated using the aforementioned motion vector, and a difference image which is included in the aforementioned coded stream and the aforementioned predicted image are added to generate a decoded image. | 10-13-2011 |
20120236183 | IMAGE TRANSFER SYSTEM, IMAGE TRANSFER METHOD, IMAGE RECEPTION APPARATUS, IMAGE TRANSMISSION APPARATUS, AND IMAGE PICKUP APPARATUS - In order to transfer an image encoded at a high compression rate and suitably increase the resolution of the transferred image, it is provided an image transfer system, comprising: an image transmission unit that transmits an image; and an image reception unit that receives the image transmitted from the image transmission unit. The image transmission unit scales down the image, and transmits the scaled-down image to the image reception unit. The image reception unit calculates an angle between a line displayed in the image transmitted from the image transmission unit and a horizontal direction of the image in correspondence with pixels included in the image, scales up the image transmitted from the image transmission unit, and removes an aliasing component of the scaled-up image based on the calculated angle. | 09-20-2012 |