Image processing device, image processing method, information processing device, information processing method, information recording device, information recording method, information reproduction device, information reproduction method, recording medium and program

A recording medium having a program which is recorded on the recording medium, can be read by a computer, is supplied with information as to coding executed to image data in the past, and causes the computer to execute coding processing up to a midstep or perfect coding processing of image data of a base band or image data, which is coded up to a midstep, wherein the program comprises:

• a first determination step for determining whether or not a coding picture type is a predetermined picture type;
• a comparison step for comparing, when it is determined by the processing at the first determination step that the picture type is the predetermined picture type, acquired information as to the coding with a condition as to the coding processing;
• and
• a second determination step for determining whether or not the information as to the coding is to be used to the coding processing based on a result of comparison of the processing executed at the comparison step.

A program, which is supplied with information as to coding executed to image data in the past causes a computer to execute coding processing up to a midstep or perfect coding processing of image data of a base band or image data, which is coded up to a midstep, comprising:

• a first determination step for determining whether or not a coding picture type is a predetermined picture type;
• a comparison step for comparing, when it is determined by the processing at the first determination step that the picture type is the predetermined picture type, acquired information as to the coding with a condition as to the coding processing;
• and
• a second determination step for determining whether or not the information as to the coding is to be used to the coding processing based on a result of comparison of the processing executed at the comparison step.

An image processing apparatus for transforming image data, comprising:

• decoding means for decoding the image data, which is supplied thereto, perfectly or imperfectly;
• and
• coding means for subjecting the image data of a base band, which is perfectly decoded by the decoding means, or the image data, which is created by being imperfectly decoded by the decoding means and coded up to a midstep, to coding processing up to a midstep or to perfect coding processing,
• wherein the coding means comprises:
• acquisition means for acquiring information as to coding executed to the image data in the past;
• and
• control means for controlling the coding processing of the image data of the base band or the image data coded up to the midstep, and
• the control means determines, when a coding picture type is a predetermined picture type, whether or not the information as to coding is to be used to the coding processing based on the information as to the coding acquired by the acquisition means and on a condition as to the coding processing.

An image processing method of an image processing apparatus for transforming image data, comprising:

• a decoding step for decoding the image data, which is supplied thereto, perfectly or imperfectly;
• and
• a coding step for subjecting the image data of a base band, which is perfectly decoded by processing of the decoding step, or the image data, which is created by being imperfectly decoded by processing of the decoding step and coded up to a midstep, to coding processing up to a midstep or to perfect coding processing,
• wherein the processing at the coding step comprises:
• a first determination step for determining whether or not a coding picture type is a predetermined picture type;
• a comparison step for comparing, when it is determined by the processing at the first determination step that the picture type is the predetermined picture type, acquired information as to the coding with a condition as to the coding processing;
• and
• a second determination step for determining whether or not the information as to the coding is to be used to the coding processing based on a result of comparison of the processing executed at the comparison step.

A recording medium having a program which is recorded on the recording medium, can be read by a computer, and causes the computer to execute processing for transforming image data, wherein the program comprises:

• a decoding step for decoding the image data, which is supplied thereto, perfectly or imperfectly;
• and
• a coding step for subjecting the image data of a base band, which is perfectly decoded by processing of the decoding step, or the image data, which is created by being imperfectly decoded by processing of the decoding step and coded up to a midstep, to coding processing up to a midstep or to perfect coding processing,
• wherein the processing at the coding step comprises:
• a first determination step for determining whether or not a coding picture type is a predetermined picture type;
• a comparison step for comparing, when it is determined by the processing at the first determination step that the picture type is the predetermined picture type, acquired information as to the coding with a condition as to the coding processing;
• and
• a second determination step for determining whether or not the information as to the coding is to be used to the coding processing based on a result of comparison of the processing executed at the comparison step.

A program for causing a computer to execute processing for transforming image data, comprising:

• a decoding step for decoding the image data, which is supplied thereto, perfectly or imperfectly;
• and
• a coding step for subjecting the image data of a base band, which is perfectly decoded by processing of the decoding step, or the image data, which is created by being imperfectly decoded by processing of the decoding step and coded up to a midstep, to coding processing up to a midstep or to perfect coding processing,
• wherein the processing at the coding step comprises:
• a first determination step for determining whether or not a coding picture type is a predetermined picture type;
• a comparison step for comparing, when it is determined by the processing at the first determination step that the picture type is the predetermined picture type, acquired information as to the coding with a condition as to the coding processing;
• and
• a second determination step for determining whether or not the information as to the coding is to be used to the coding processing based on a result of comparison of the processing executed at the comparison step.

An image recording apparatus for recording image data, comprising:

• decoding means for decoding the image data, which is supplied thereto, perfectly or imperfectly;
• coding means for subjecting the image data of a base band, which is perfectly decoded by the decoding means, or the image data, which is created by being imperfectly decoded by the decoding means and coded up to a midstep, to coding processing up to a midstep or to perfect coding processing;
• and
• recording control means for controlling the record of the image data coded by the coding means,
• wherein the coding means comprises:
• acquisition means for acquiring information as to coding executed to the image data in the past;
• and
• control means for controlling the coding processing of the image data of the base band or the image data coded up to the midstep, and
• wherein, when a coding picture type is a predetermined picture type, the control means determines whether or not the information as to coding is to be used to the coding processing based on the information as to the coding acquired by the acquisition means and on a condition as to the coding processing.

An image recording method of an image recording apparatus for recording image data, comprising:

• a decoding step for decoding the image data, which is supplied thereto, perfectly or imperfectly;
• a coding step for subjecting the image data of a base band, which is perfectly decoded by processing of the decoding step, or the image data, which is created by being imperfectly decoded by processing of the decoding step and coded up to a midstep, to coding processing up to a midstep or to perfect coding processing;
• and
• a recording control step for controlling the recording of the image data coded by the processing at the coding step,
• wherein the processing at the coding step comprises:
• a first determination step for determining whether or not a coding picture type is a predetermined picture type;
• a comparison step for comparing, when it is determined by the processing at the first determination step that the picture type is the predetermined picture type, acquired information as to the coding with a condition as to the coding processing;
• and
• a second determination step for determining whether or not the information as to the coding is to be used to the coding processing based on a result of comparison of the processing executed at the comparison step.

An image reproducing apparatus for reproducing image data, comprising:

• reproduction means for reproducing the image data recorded to a predetermined recording medium;
• decoding means for decoding the image data reproduced by the reproduction means perfectly or imperfectly;
• and
• coding means for subjecting the image data of a base band, which is perfectly decoded by the decoding means, or the image data, which is created by being imperfectly decoded by the decoding means and coded up to a midstep, to coding processing up to a midstep or to perfect coding processing,
• wherein the coding means comprises:
• acquisition means for acquiring information as to coding executed to the image data in the past;
• and
• control means for controlling the coding processing of the image data of the base band or the image data coded up to the midstep, and
• wherein the control means determines, when a coding picture type is a predetermined picture type, whether or not the information as to coding is to be used to the coding processing based on the information as to the coding acquired by the acquisition means and on a condition as to the coding processing.

An information reproducing method of an information reproducing apparatus for reproducing image data, comprising:

• a reproduction step for reproducing the image data recorded to a predetermined recording medium;
• a decoding step for decoding the image data reproduced by the reproduction means perfectly or imperfectly;
• and
• a coding step for subjecting the image data of a base band, which is perfectly decoded by processing of the decoding step, or the image data, which is created by being imperfectly decoded by the decoding step and coded up to a midstep, to coding processing up to a midstep or to perfect coding processing,
• wherein the processing at the coding step comprises:
• a first determination step for determining whether or not a coding picture type is a predetermined picture type;
• a comparison step for comparing, when it is determined by the processing at the first determination step that the picture type is the predetermined picture type, acquired information as to the coding with a condition as to the coding processing;
• and
• a second determination step for determining whether or not the information as to the coding is to be used to the coding processing based on a result of comparison of the processing executed at the comparison step.