Image processing apparatus and method, storage medium, and program
AssigneeSony Corporation
InventorsTanio Nagasaki, Hideaki Tomikawa, Seigo Iwasaki, Tetsuo Motomura, Masahiro Igarashi
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Abstract
Texture data filtered according to each of different reduction ratio are stored in a texture buffer. A texture mapping apparatus (an lod calculating apparatus) calculates an lod (Level Of Detail) which represents a reduction ratio of each pixel of a polygon. The calculation does not include a divisional calculation. In other words, the lod calculating apparatus does not need many multipliers, as compared with a case in which an operation including a divisional calculation, thereby enabling the down-sizing of the lod calculating apparatus.
Claims7
An image processing apparatus for determining a reduction ratio for each pixel of a plurality of unit graphics which form a model, and associating texture data, which corresponds to said reduction ratio determined, with said unit graphic, said apparatus comprising:
- storing means for storing a plurality of texture data corresponding to predetermined reduction ratios;
- determining means for determining a reduction ratio for each pixel of said unit graphic based on an operational result of a predetermined equation which does not include a divisional calculation;
- obtaining means for obtaining texture data, from said storing means, corresponding to said reduction ratio determined by said determining means;
- and
- associating means for associating said texture data obtained by said obtaining means with said unit graphic.
An image processing method of determining a reduction ratio for each pixel of a plurality of unit graphics which forms a model, and associating texture data, which corresponds to said reduction ratio determined, with said unit graphic, the method comprising:
- a storing step for storing a plurality of texture data corresponding to predetermined reduction ratios;
- a determining step for determining a reduction ratio for each pixel of said unit graphic based on an operational result of a predetermined equation which does not include a divisional calculation;
- an obtaining step for obtaining texture data, from said plurality of texture data stored in processing of said storing step, corresponding to said reduction ratio determined by said determining step;
- and
- an associating step for associating said texture data obtained by said obtaining step with said unit graphic.
A storage medium which stores a computer-readable program for determining a reduction ratio for each pixel of a plurality of unit graphics which form a model, and associating texture data, which corresponds to said reduction ratio determined, with said unit graphic, said program comprising:
- a storing control step for storing a plurality of texture data corresponding to predetermined reduction ratios;
- a determining control step for determining a reduction ratio for each pixel of said unit graphic based on an operational result of a predetermined equation which does not include a divisional calculation;
- an obtaining control step for obtaining the texture data, which corresponds to said reduction ratio determined in said determining control step, from said plurality of texture data stored in said storing control step;
- and
- an associating control step for associating said texture data obtained in said obtaining control step with said unit graphic.
A program for an image processing apparatus for determining a reduction ratio for each pixel of a plurality of unit graphics which form a model, and associating texture data, which corresponds to said reduction ratio determined, with said unit graphic, said program enabling a computer to perform processing, said processing including:
- a storing control step for storing a plurality of texture data corresponding to predetermined reduction ratios;
- a determining control step for determining a reduction ratio for each pixel of said unit graphic based on an operational result of a predetermined equation which does not include a divisional calculation;
- an obtaining control step for obtaining texture data, which corresponds to said reduction ratio determined in said determining control step, from said plurality of texture data stored in said storing control step;
- and
- an associating control step for associating said texture data obtained in said obtaining control step with said unit graphic.
Dependencies are inferred from the claim text.