摘要:
As an embodiment of a moving picture encoding apparatus, a moving picture type judgment section judges whether an input moving picture is a stereoscopic picture and, when the moving picture is a stereoscopic picture, a stereoscopic picture identifier is set to “1” and a moving picture rotation section rotates the moving picture clockwise by +90 degrees or −90 degrees. On the other hand, when the moving picture is not a stereoscopic picture, the stereoscopic picture identifier is set to “0” and the moving picture is not rotated. Then, a moving picture interlaced encoding section produces an encoded bit stream by performing interlaced encoding of the moving picture and a stereoscopic picture identifier encoding section produces encoded information by encoding the stereoscopic picture identifier. Further, a multiplexing section produces a multiplexed encoded bit stream by multiplexing the above-mentioned encoded bit stream and encoded information.
摘要:
A frame rate is determined in accordance with the smoothness in movement of a video. An amount of change detection section extracts an amount of change based on a plurality of frame pictures included in an input video signal input as a moving picture signal from the outside and outputs an amount of change to an evaluation value calculation section. The evaluation value calculation section computes an amount of change in time between each of the frame pictures based on the amount of change and the time interval between frame pictures based on frame rate information and evaluates an evaluation value for evaluating the smoothness in movement of an input video based on the amount of change in time. The evaluation value is output to the outside as a factor for determining a frame rate.
摘要:
An object is to provide a video evaluation apparatus and video evaluation method capable of appropriately evaluating a video consisting of a plurality of frame images, using an objective standard. The object is achieved as follows. A reference characteristic, which is a predetermined spatio-temporal frequency characteristic about a video, is stored, and a video characteristic analyzer 101 calculates a spatio-temporal frequency characteristic of a target video consisting of a plurality of frame images. Then a video evaluation determiner 102 calculates an evaluated value of the target video, based on a relative relation between the calculated spatio-temporal frequency characteristic and the stored reference characteristic. This enables appropriate evaluation of the video.
摘要:
The present invention provides a motion picture receiving device, comprising: image data receiving means for receiving encoded image data; decoding means for decoding the image data received by the image data receiving means; output means for outputting the image data decoded by the decoding means; and control means for determining an encoding condition of image data by communicating with a motion picture transmitting device which transmits the image data, and for controlling the decoding means to enable decoding of the image data encoded in accordance with the encoding condition; wherein, when the number of motion picture transmitting devices changes, the control means determines the encoding condition on the basis of the changed number of the motion picture transmitting devices.
摘要:
A video processing system 100 is provided with video encoding device 10 and video decoding device 20. The video encoding device 10 implements backward interframe prediction from a temporally subsequent frame and outputs information indicating that an option to eliminate use of a decoded image of the temporally subsequent frame was chosen. The video decoding device 20 eliminates use of the decoded image of the frame on the basis of this information, in conjunction with input of the information for eliminating use of the decoded image of the temporally subsequent frame.
摘要:
A moving picture encoding apparatus for dividing a frame image as a coding target in a moving picture signal into plural target regions, detecting motion vectors for the respective target regions, and thereby performing coding based on motion compensation. The moving picture encoding apparatus comprises motion vector prediction means for performing a correction of scaling the motion vector of an adjacent region adjacent to the target region on the basis of the target reference frame image. The motion vector predicting means also performing a determination of an optimum predicted motion vector based on the motion vector of the adjacent region adjacent to the target region and thereby predicting the optimum predicted motion vector after the correction.
摘要:
The present invention provides a motion picture receiving device, comprising: image data receiving means for receiving encoded image data; decoding means for decoding the image data received by the image data receiving means; output means for outputting the image data decoded by the decoding means; and control means for determining an encoding condition of image data by communicating with a motion picture transmitting device which transmits the image data, and for controlling the decoding means to enable decoding of the image data encoded in accordance with the encoding condition; wherein, when the number of motion picture transmitting devices changes, the control means determines the encoding condition on the basis of the changed number of the motion picture transmitting devices.
摘要:
An object of the present invention is to express a predicted picture signal with light overheads, and to provide motion compensation of different pixel accuracy. A moving picture encoding device 20 according to the present invention includes a motion vector detection means 32 for detecting a motion vector of a predetermined area to be encoded in a frame picture, a prediction means 33c for predicting the motion vector of the predetermined area to be encoded by using an encoded motion vector of a predetermined area in the frame picture, a determination means 33d for determining whether or not the motion vector detected by the motion vector detection means 32 is a predetermined motion vector set in accordance with the motion vector predicted by the prediction means 33c, and a switching means 33e for switching a method of calculating a motion compensation value of the predetermined area to be encoded depending on whether or not the motion vector detected by the motion vector detection means 32 is the predetermined motion vector.
摘要:
An image encoding device including an input section inputting an input image constituting an encoding target; a reference image accumulation section accumulating a reference image; a reference image accompanying information accumulation section accumulating reference image accompanying information that accompanies the reference image; an encoding section modifying the reference image and the reference image accompanying information in accordance with the input image, generating a predictive signal for the input image, and encoding the input image; and an output section outputting, as encoded data, compressed data obtained by the encoding by the encoding section together with modification method information indicating a modification method for the reference image. Thereby, image information can be encoded/decoded more efficiently by generating an appropriate predictive signal.
摘要:
A variable-length encoder that feeds a Coded Block Pattern (CBP) as an input symbol to variable-length code output part. Coded symbol memory supplies CBPs in neighboring blocks as coding map table reference information to coding map table provider. Coding map table provider determines a coding map table used in coding of the CBP, based on these CBPs in the neighboring blocks, and provides a coding map table H4 to variable-length code output part. Variable-length coding table provider feeds a variable-length coding table to variable-length code output part. Then the coding target CBP is subjected to variable-length coding, and the resultant is outputted as coded data. This allows information source coding of coding symbols to be performed efficiently according to the coding condition and the property of image.