JP2010219786A5 - - Google Patents

Description

In order to achieve the object of the present invention, for example, an image processing apparatus of the present invention comprises the following arrangement. That is, calculated and means for acquiring image data, means for dividing the image by the image data indicating a plurality of pixels blocks, a means for acquiring speech data including a plurality of channels, the position of the sound source using the sound data , wherein the position of the sound source obtained by using the respective positions of said plurality of pixel blocks in the said image, means for determining the distance between each of the sound sources and the plurality of pixel blocks, said plurality for each pixel block, and assigning means for assigning the importance information indicating the degree of importance according to the distance determined for the pixel block, when compressing each of said plurality of pixel blocks, important exhibit higher importance The pixel block to which the degree information is assigned is compressed so as to be decoded with higher image quality, and the importance information indicating the lower importance is assigned. Element block, characterized in that it comprises means for compressing as decoded at a lower quality, each pixel block and compressed, and output means for outputting, and the audio data.

Claims (8)

Means for obtaining image data;
It means for dividing an image by the image data indicating a plurality of pixel blocks,
Means for acquiring audio data including multiple channels;
Using the audio data , a position of a sound source is obtained, and the obtained sound source position and each position of the plurality of pixel blocks in the image are used to obtain the sound source and each of the plurality of pixel blocks. Means for determining the distance between,
For each of said plurality of pixel blocks, and assigning means for assigning the importance information indicating the degree of importance according to the distance determined for the pixel block,
When compressing each of the plurality of pixel blocks, the pixel block to which importance information indicating higher importance is assigned is compressed so as to be decoded with higher image quality, and importance information indicating lower importance is compressed. Means for compressing so that the pixel block assigned with is decoded with lower image quality;
An image processing apparatus comprising: an output unit that outputs each compressed pixel block and the audio data. It said assigning means, wherein for each of a plurality of pixel blocks, an image processing apparatus according to claim 1, characterized in that assigning the importance information indicating the degree of importance according to the magnitude of the distance calculated for the pixel block . The assigning means includes
Against each of the plurality of pixel blocks, and calculating means for volume information indicating sound volume from the sound source to pair the pixel block, determined using the distances calculated for the pixel block,
Against each of the plurality of pixel blocks, according to claim 1, characterized in that it comprises a means for assigning the importance information indicating the degree of importance according to the magnitude of the volume indicated by the volume information obtained for pixel blocks Image processing device.   The image processing apparatus according to claim 3, wherein the calculation unit obtains volume information indicating a larger volume for a pixel block having a smaller distance from the sound source.   The image processing apparatus according to claim 1, wherein the output unit compresses and outputs the audio data.   The output means rearranges each compressed pixel block in descending order of importance indicated by corresponding importance information, and outputs a stream including the rearranged set of pixel blocks and the audio data. The image processing apparatus according to claim 1. An image processing method performed by an image processing apparatus,
An image data acquisition unit of the image processing apparatus acquires image data;
A step of dividing an image indicated by the image data into a plurality of pixel blocks by a dividing unit of the image processing apparatus ;
Audio data acquisition means of the image processing apparatus acquires audio data including a plurality of channels;
It said computing means of the image processing apparatus determines the position of the sound source using the sound data, by using the position of the determined sound source, and a respective position of said plurality of pixel blocks in the said image, the sound source And determining a distance between each of the plurality of pixel blocks;
Assigning means of the image processing apparatus, for each of said plurality of pixel blocks, and allocation step of allocating the importance information indicating the degree of importance according to the distance determined for the pixel block,
When the compression unit of the image processing apparatus compresses each of the plurality of pixel blocks, the pixel block to which importance information indicating higher importance is assigned is compressed so as to be decoded with higher image quality, Compressing a pixel block to which importance information indicating a lower importance is assigned so that the pixel block is decoded with a lower image quality;
An image processing method, wherein the output means of the image processing apparatus includes an output step of outputting each compressed pixel block and the audio data. A computer program for causing a computer to function as each unit included in the image processing apparatus according to any one of claims 1 to 6 .