JP2008042684A5

JP2008042684A5 -

Info

Publication number: JP2008042684A5
Application number: JP2006216255A
Authority: JP
Filing date: 2006-08-08
Publication date: 2009-09-17
Anticipated expiration: 2026-08-08

Claims

Based on the pixel values of the encoded pixels around the pixel of interest, to classify the state of the focus position, according to a probability model corresponding to the classified condition, the target pixel an image encoding device for encoding,
State number determining means for determining the number of states that can be taken according to the size information of the image data to be encoded;
A state discriminating means whether or in any state in the number determined in the state number determination means determines based on the pixel values of the encoded pixels around the target pixel,
An image encoding apparatus comprising: an encoding unit configured to encode the pixel of interest using the state determined by the state determination unit as an encoding parameter.

Based on the pixel values of the encoded pixels around the pixel of interest, to classify the state of the focus position, according to a probability model corresponding to the classified condition, the target pixel an image encoding device for encoding,
Setting means for setting the size of a block containing a plurality of pixels ;
Cutout means for cutting out block image data of the block from image data to be encoded in units of blocks of a set size;
State number determining means for determining the number of states that can be taken according to size information indicating the size set by the setting means;
State determining means for determining which state within the number determined by the state number determining means is based on pixel values of encoded pixels around the pixel of interest in the block image data ;
The state is determined by the condition discrimination means and coding parameters, wherein the target pixel is encoded, the image encoding device characterized by comprising an encoding means for generating encoded data of the block image data.

The image coding apparatus according to claim 1, wherein the state number determination unit determines the number of states based on at least one of a horizontal and a vertical pixel number indicated by size information.

The image encoding apparatus according to claim 1, wherein the encoding unit is a lossless encoding unit using predictive encoding.

Based on the pixel values of the encoded pixels around the pixel of interest, the classifying the state of the interested position, according to a probability model corresponding to the classified condition, the target pixel to an image coding method for coding,
A state number determining step for determining the number of states that can be taken according to the size information of the image data to be encoded;
A state determination step of whether the one of the states in the number determined in the state number determination step determines, based on the pixel values of the coded pixels around the target pixel,
An image encoding method comprising: an encoding step of encoding the pixel of interest using the state determined in the state determination step as an encoding parameter.

Based on the pixel values of the encoded pixels around the pixel of interest, the classifying the state of the interested position, according to a probability model corresponding to the classified condition, the target pixel to an image coding method for coding,
A setting step for setting the size of a block including a plurality of pixels ;
A cutout step of cutting out block image data of the block from the image data to be encoded in units of blocks of a set size,
According to size information indicating the size set in the setting step, a state number determination step for determining the number of states that can be taken;
A state determination step of determining which state within the number determined in the state number determination step is based on pixel values of encoded pixels around the pixel of interest in the block image data ;
The state is determined by the state determination process and an encoding parameter, the target pixel is encoded, the image encoding method, characterized in that it comprises an encoding step of generating encoded data of the block image data.

By computer executes read, the computer, the computer program for causing to function as an image encoding apparatus according to claim 1 or 2.

A computer-readable storage medium storing the computer program according to claim 7.