JP2003169294A5 - - Google Patents

Claims (10)

When outputting a moving image consisting of a plurality of continuous frames as a video signal,
A frame modification step for modifying the at least one frame of the moving image so that the visual influence is negligible;
In the frame modification step, when the moving image is encoded according to a moving image compression method in which another frame is decoded based on a predetermined frame for each unit group composed of a plurality of consecutive frames, the modification is performed. A video signal output method characterized by adding a modification in which a frame added with hinders motion compensation, thereby making it difficult to compress by prediction and causing deterioration in image quality. A video signal including a frame that has been modified by the frame modification step is subjected to a moving image compression method in which other frames are decoded based on a predetermined frame for each unit group composed of a plurality of consecutive frames. The video signal output method according to claim 1, wherein the output is a digital signal as a bit stream. The video signal output method according to claim 1, wherein in the frame modification step, modification is applied to all frames. The video according to claim 1, wherein, in the frame modification step, modification is performed by replacing information of at least one pixel constituting the frame before modification with information of a pixel located in the vicinity of the pixel. Signal output method. The video signal output method according to claim 1, wherein in the frame modification step, modification is performed by deforming at least a part of a frame before modification. In a digital signal output device that outputs a bitstream according to a moving image compression method in which decoding of other frames is performed based on a predetermined frame for each unit group composed of a plurality of consecutive frames.
A frame modifying means for modifying the at least one frame of the unit group so that the visual influence is negligible;
When the frame modification means converts the bitstream into an analog signal and then encodes it again according to the moving image compression method, the modified frame inhibits motion compensation, thereby making it difficult to compress by prediction and thereby reducing the image quality. A digital signal output device characterized by adding a modification that causes deterioration of the digital signal. In an information recording medium in which a bit stream is recorded according to a moving image compression method in which decoding of other frames is performed based on a predetermined frame for each unit group composed of a plurality of continuous frames.
At least one frame in the unit group has been modified so that the visual impact is negligible,
In the modification, when the bit stream is converted into an analog signal and then encoded again according to the moving image compression method, the modified frame impedes motion compensation, thereby making it difficult to compress by prediction, thereby reducing the image quality. An information recording medium characterized by being deteriorated. An image processing method for moving images,
A step of superimposing a high-frequency band signal extending in a two-dimensional plane on a color difference signal component frame of a frame image that constitutes moving image data and includes pixel data including a luminance signal and a color difference signal component; Image processing method. An image processing apparatus that performs image processing on a moving image,
High-frequency band signal generation means for generating high-frequency band signals extending in a two-dimensional plane as a region that is substantially equal to the color difference signal component frame area of a frame image composed of pixel data including luminance signals and color difference signal components, constituting moving image data; ,
Signal superimposing processing means for superimposing the high frequency band signal on the color difference signal component frame;
An image processing apparatus comprising: A computer program as an image processing execution program for a moving image, wherein the computer program is:
A step of superimposing a high-frequency band signal extending in a two-dimensional plane on a color difference signal component frame of a frame image that constitutes moving image data and includes pixel data including a luminance signal and a color difference signal component; Computer program.