An image encoding apparatus includes a pixel bit depth increase converter (1001) to convert bit depth of each pixel of an input image to output a converted input image and output bit conversion information indicating the number of bits changed by conversion, an image encoder (10) to encode the input converted input image to output encoded image information, and a multiplexer (12) to multiplexes the bit conversion information and encoded image information.

Image coding apparatus and method, and image decoding apparatus and method

If a reference frame displayed at the reproduction side immediately before a current image frame to be encoded is an inter encoding image frame, a quantization control device (999) appropriately corrects the level (quantization value) of an intra encoding so as to visually reduce I-frame flicker caused by a difference between the inter encoding noise characteristic of the inter encoding image frame and the noise characteristic of the current intra encoding.

Moving picture encoding method, device using the same, and computer program

Controlling a feature of an encoding process for regions of an image pattern representing more than one image when the regions include an amount of disparity in the represented images that would result in cross-contamination between the represented images if encoded with the feature. The control may be, for example, any of, turning the encoding feature off, using the encoding feature less often than when encoding an image pattern representing a single image, negatively biasing the encoding feature, and enabling the encoding feature for regions determined to have zero or near zero disparity and disabling the feature for all other regions. The represented images comprise, for example, any of a stereoscopic view, multiple stereoscopic views, multiple views of a same scene, and multiple unrelated views.

Encoder optimization of stereoscopic video delivery systems

A method, medium, and system compressing and/or reconstructing image data. The data compression method includes compressing current data according to a plurality of modes for compressing current data, determining whether the current data compressed according to the plurality of modes can be represented by a fixed length of bits, selecting a mode from among modes in which the compressed current data can be represented by the fixed length of bits, and outputting the compressed current data according to the selected mode. Accordingly, it is possible to significantly lower the complexity of an image encoder/decoder system, and exactly meet a picture-based Control Bit Rate (CBR) suitable for a Liquid Crystal Display Dynamic Capacitance Compensation (LCD DCC) device/system.

Method, medium, and system visually compressing image data

An image processing apparatus, a method, and a program that enable an amount of code to be suppressed below a desired value with more reliability. An emergency mode determining section determines that the amount of code of a next picture is likely to exceed an upper limit if a target bit calculated by a rate controlling section exceeds a predetermined upper limit. If it is determined that the amount of code of the next picture is likely to exceed the upper limit, the code amount controlling section controls an orthogonal transducing section to replace a transform coefficient of a predetermined frequency component with zero, controls an intra predicting section to restrict intra prediction modes to be applied, and controls a mode determining section to restrict inter prediction modes to be applied. The prevent invention can be applied to an encoding apparatus.

Image processing apparatus and method, and program

PROBLEM TO BE SOLVED: To solve a problem that prediction may be impossible when a motion vector that is applied by an error concealment for an error block on a boundary of a frame is used as it is for motion compensation since, when there is an error in an inputted encoded bit line in a digital image decoding device, error concealment is performed by using only a motion vector of a macro block in a line positioned just above a macro block, by one line, that has caused an error. SOLUTION: When an error is detected by an error detecting part 101, a motion vector of a block near an error block stored in a motion vector storage part 102 is set in a motion vector setting part 103. In the motion vector storage part 102, a zero vector is stored as the motion vector of the error block. A motion compensating/decoding part 105 compensates/decodes the motion based on the motion vector set in the motion vector setting part 103. COPYRIGHT: (C)2003,JPO

Device and method for decoding digital image

PURPOSE:To improve the coding efficiency by using difference information of a signal from a frame memory and an input signal so as to change a filter intensity cutting off a high frequency component thereby eliminating the high frequency component from the signal to be coded. CONSTITUTION:A filter control section 21 uses an input picture signal 12 and a motion compensation predict signal 14 to generate a filter control signal 23. An adaptive filter section 22 executes filtering for, high frequency component elimination in response to the signal 23. A anticipation signal 24 subject to filter processing is subtracted from the signal 12 by a subtractor 3 to generate a anticipation error signal 15. A coding section 4 quantizes the signal 15 to generate coded error information 16. A local decoding section 5 decodes the coded information 16 to provide an output of a local decoding signal 17. An adder 6 adds the signals 24, 17 to generate the local decoding signal 18 and it is written in a frame memory 1.

Inter-frame coding processing system and inter-frame coding processing method and coding control system

PROBLEM TO BE SOLVED: To obtain a stereo image encoding apparatus, stereo image encoding method and stereo image encoding program in which motion compensation prediction encoding close to actual motion is achieved to improve precision in encoding a plurality of images. SOLUTION: The stereo image encoding apparatus comprises: a grouping unit 4 for implementing grouping of regions within a screen in accordance with a parallax calculated by a parallax calculation unit 3 and for extracting characteristics of the grouped regions; and a motion prediction unit 7 for predicting motions of the respective regions grouped by the grouping unit 4, in consideration of characteristics extracted by the grouping unit 4, then an encoding unit 8 uses motion prediction results of the regions by the motion prediction unit 7 to encode images A, B. COPYRIGHT: (C)2008,JPO&INPIT

Stereo image encoding apparatus, stereo image encoding method and stereo image encoding program

PROBLEM TO BE SOLVED: To reduce or remove random noise without deteriorating resolution from a photographic image SOLUTION: The image processor is provided with: an image storage part 20 for receiving and storing a plurality of images in a frame unit which are captured at a different time; an image correlation calculation part 30 for defining one of a plurality of images 2 1 and 2 2 captured at neighboring different times read from the image storage part 20 as a reference image, and for calculating image correlation data 3 1 by performing correlation processing between the reference image 2 1 and the image 2 2 other than the reference image; and an image composition part 40 for comparing the calculated image correlation data 3 1 with a correlation threshold specified in advance, and for combining the reference image 2 1 with the image 2 2 other than the reference image only when the image correlation data 3 1 are equal to or less than the correlation threshold COPYRIGHT: (C)2010,JPO&INPIT

敏明嶋田

Papers

Device and method for decoding digital image

Inter-frame coding processing system and inter-frame coding processing method and coding control system

Stereo image encoding apparatus, stereo image encoding method and stereo image encoding program

Image processor and image processing program

D-11-33 動き探索を用いた動画像中の雨滴ノイズ除去に関する一検討(d-11. 画像工学,一般セッション)

敏明 嶋田

Papers

Device and method for decoding digital image

Inter-frame coding processing system and inter-frame coding processing method and coding control system

Stereo image encoding apparatus, stereo image encoding method and stereo image encoding program

Image processor and image processing program

D-11-33 動き探索を用いた動画像中の雨滴ノイズ除去に関する一検討(d-11. 画像工学,一般セッション)

敏明嶋田