Image encoding method and apparatus and image encoding program
An image coding and coding device technology, applied in the field of image coding programs, can solve problems such as motion prediction not meeting expectations, increasing errors, etc.
Inactive Publication Date: 2005-07-20
SONY CORP
View PDF3 Cites 7 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0032] Meanwhile, if the method described in Patent Document 1 is applied to predictive mode-rich coding such as figure 1 As shown, such as MPEG4-AVC, especially compared with the traditional MPEG system, the error increases
In addition, if the above method is used, the motion prediction may not meet expectations, and in case of scene changes, the motion prediction residual increases to invalidate the correct estimation of the generated code size
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0050] In the following, some preferred embodiments of the present invention are explained. The first embodiment is as image 3 An image encoding device 10 is shown. This image encoding device 10 includes an encoder 12, a predictor 18 for generating a code amount, and an encoding controller 19. The encoder is used to apply an encoding process that is rich in prediction modes such as MPEG4 AVC and has an orthogonal cosine transform as a main function to the input image signal VIN (an image to be encoded) from the input terminal 11. The predictor 18 that generates the code amount predicts the code amount BIT(N) generated in the encoder 12 based on the prediction residue predicted by applying intra prediction and inter prediction to the input image signal VIN. The encoding controller 19 uses the generated code amount BIT(N) predicted by the generated code amount predictor 18 for controlling the encoding process in the encoder 12.
[0051] The encoder 12 includes an intra predictor 13...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
Disclosed is a picture encoding apparatus in which, in the encoding rich in predictive modes, the volume of codes generated may be estimated highly accurately prior to encoding, and in which the encoding processing in the encoding means and step may be carried out under optimum control of, for example, the picture quality, compression ration or the rate. An encoder 12 applies encoding processing, rich in predictive modes, such as MPEG4 AVC, having orthogonal cosine transform, as a main function, to an input picture signal VIN (picture being encoded) from an input terminal 11. A predictor for the volume of codes generated 18 predicts the volume of codes generated BIT(N) in the encoder 12, based on the prediction residues obtained on applying the intra-frame and inter-frame predictive processing to the input picture signal VIN. The encoding controller 19 uses the volume of codes generated BIT(N), predicted by the predictor for the volume of codes generated 18, for controlling the encoding in the encoder 12.
Description
Technical field [0001] The present invention relates to an image encoding device, an image encoding method, and an image encoding program. More specifically, it relates to an image encoding device, an image encoding method, and an image encoding program, which can be conveniently used to record moving or still images on recordings such as magnetic tapes, magnetic disks, optical disks, or magneto-optical disks. On the medium, or used to transmit moving or still images through the transmission medium for a video conference system or a telephone system capable of image transmission / reception. Background technique [0002] In digitizing moving images and recording or sending such digitized moving images, considering the excessively high data volume, the traditional approach is to compress image data through encoding. The coding of a typical moving image is known as a motion-compensated predictive coding system. [0003] Motion-compensated predictive encoding is an encoding method tha...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & AuthorityApplications(China)
IPC IPC(8): H04N19/50H03M7/36H04N19/102H04N19/105H04N19/11H04N19/115H04N19/126H04N19/13H04N19/134H04N19/136H04N19/137H04N19/142H04N19/149H04N19/159H04N19/176H04N19/196H04N19/503H04N19/51H04N19/577H04N19/59H04N19/593H04N19/60H04N19/61H04N19/91
CPCH04N19/00181H04N19/00169H04N19/146H04N19/149H04N19/137H04N19/51
Inventor小川要关贵仁
OwnerSONY CORP