TEXTURE MAPPING APPARATUS, METHOD AND PROGRAM

• US 20070229529A1
• Filed: 03/19/2007
• Published: 10/04/2007
• Est. Priority Date: 03/29/2006
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Sekine, Masahiro, Yamauchi, Yasunobu, Mihara, Isao
• Granted Patent: US 7,639,261 B2
• Time in Patent Office: Days
• US Class Current: 345/582
• CPC Class Codes: G06T 15/04 Texture mapping

Abstract

Texture mapping (TM) apparatus includes unit acquiring texture data items (TD) and model data items (MD), unit generating control data used for TM according to TD and MD, unit generating control instructions (CIs) for TM processes corresponding to control data, unit selecting at least one model data item (ALMD) and TD from TD and MD, based on first CI, unit determining arrangement of selected ALMD and TD, unit storing selected ALMD and TD based on determined arrangement, unit selecting, from stored MD and TD, MD and TD used for rendering, based on second CI, unit correcting MD selected for rendering and TD selected for rendering, using first measure designated by third CI, unit performing interpolation on corrected MD and TD, using second measure designated by fourth CI, unit mapping interpolated TD onto interpolated MD, using third measure designated by fifth CI, and unit outputting data as computer graphics data.

Claims

1. A texture mapping apparatus comprising:

an acquisition unit configured to acquire a plurality of texture data items acquired or generated under a plurality of conditions, and a plurality of model data items;

a first generation unit configured to generate control data used for texture mapping, in accordance with the texture data items and the model data items;

a second generation unit configured to generate control instructions for texture mapping processes corresponding to the control data;

a data selection unit configured to select at least one model data item and texture data items from the texture data items and the model data items, based on a first control instruction included in the control instructions;

a determination unit configured to determine arrangement of the at least one model data item and the texture data items;

a storage unit configured to store the at least one model data item and the texture data items, based on the determined arrangement;

a rendering-data selection unit configured to select, from the stored model data item and the stored texture data items, a model data item and a plurality of texture data items used for rendering, based on a second control instruction included in the control instructions;

a correction unit configured to correct the model data item selected for rendering and the texture data items selected for rendering, using a first measure designated by a third control instruction included in the control instructions;

an interpolation unit configured to perform interpolation on the corrected model data item and on the corrected texture data items, using a second measure designated by a fourth control instruction included in the control instructions;

a mapping unit configured to map the interpolated texture data items onto the interpolated model data item, using a third measure designated by a fifth control instruction included in the control instructions; and

an output unit configured to output data acquired by the mapping unit as computer graphics data.

2. The apparatus according to claim 1, wherein:

the data selection unit is configured to determine what capacity of data be stored in a memory, based on the first control instruction;

the determination unit is configured to determine the arrangement of the at least one model data item and the texture data items to enhance a hit rate of the texture data items in the memory and to minimize number of operations of loading the texture data items; and

the storage unit is configured to store the texture data items into the memory after performing an affine transformation process on the texture data items for converting the texture data items into normalized rectangular data, or after rearranging the texture data items, in order to arrange the texture data items in the arrangement determined by the determination unit.

3. The apparatus according to claim 1, wherein the rendering-data selection unit is configured to perform switching between selection, from the stored texture data items, of texture data items closest to the second control instruction, and selection, from the stored texture data items, of a single texture data item closest to the second control instruction, the rendering-data selection unit being configured to increase number of texture data items to be selected from the stored texture data items, at the time that a first change included in changes in the conditions indicates that quality is to be enhanced, the rendering-data selection unit being configured to decrease the number of texture data items to be selected from the stored texture data items, at the time that a second change included in the changes in the conditions indicates that quality fails to be enhanced, the rendering-data selection unit being configured to select first texture data corresponding to a change included in the changes in the conditions, at the time that the first texture data covers second texture data corresponding to another change included in the changes in the conditions.

4. The apparatus according to claim 1, wherein:

the second generation unit is configured to generate, as the second control instruction, a material characteristic instruction for causing a characteristic of a texture material to be reflected in accordance with the interpolated texture data; and

the rendering-data selection unit is configured to select, from the stored model data item and the stored texture data items, a model data item corresponding to the material characteristic instruction, or animation data contained in the model data item corresponding to the material characteristic instruction.

5. The apparatus according to claim 1, wherein the correction unit is configured to receive, as the third control instruction, an instruction to correct each of the texture data items selected for rendering, in accordance with physical model data based on a physical law, or in accordance with physical model data based on texture data items included in the texture data items.

6. The apparatus according to claim 1, wherein the correction unit is configured to receive, as the third control instruction, an instruction to correct position coordinates of vertex data contained in the model data item selected for rendering, in accordance with the texture data items selected for rendering, the model data item selected for rendering, or the animation data.

7. The apparatus according to claim 1, wherein:

if the correction unit is configured to perform a greater scale of correction on the texture data items selected for rendering and the model data item selected for rendering, the correction unit is configured to impart a lower degree of reliability to the texture data items selected for rendering and the model data item selected for rendering; and

if the lower degree of reliability is imparted, the interpolation unit is configured to receive, as the fourth control instruction, an instruction to set a lower interpolation rate.

8. The apparatus according to claim 1, wherein:

the second generation unit is configured to generate reference texture data as the fourth control instruction; and

the interpolation unit is configured to correct the interpolated texture data items to make the interpolated texture data items close to the reference texture data.

9. The apparatus according to claim 1, wherein the second generation unit is configured to generate the control instructions by analyzing the model data items and the texture data items.

10. The apparatus according to claim 1, wherein the second generation unit is configured to analyze each of the texture data items to divide each of the texture data items into a first portion which includes a continuous change and is expressed by physical model data, and a second portion which includes a discontinuous change and is only expressed by each of the texture data items, the second generation unit being configured to generate the physical model data based on physical laws or the analysis result of each of the texture data items, the second generation unit being configured to generate the control instruction to select each of the texture data items, the control instruction indicating a difference between the first portion and each of the texture data items.

11. The apparatus according to claim 10, wherein the second generation unit is configured to generate the control instruction to the data selection unit, the rendering-data selection unit, the correction unit, the interpolation unit and the mapping unit.

12. A texture mapping apparatus comprising:

an acquisition unit configured to acquire a plurality of texture data items acquired or generated under a plurality of conditions, and a plurality of model data items, and control data used for texture mapping;

a generation unit configured to generate control instructions corresponding to the control data for texture mapping processes;

a data selection unit configured to select at least one model data item and texture data items from the texture data items and the model data items, based on a first control instruction included in the control instructions;

a determination unit configured to determine arrangement of the at least one model data items and the texture data items;

a storage unit configured to store the at least one model data item and the texture data items, based on the determined arrangement;

a rendering-data selection unit configured to select, from the stored model data item and the stored texture data items, a model data item and a plurality of texture data items used for rendering, based on a second control instruction included in the control instructions;

a correction unit configured to correct the model data item selected for rendering and the texture data items selected for rendering, using a first manner designated by a third control instruction included in the control instructions;

an interpolation unit configured to perform interpolation on the corrected model data item and on the corrected texture data items, using a second manner designated by a fourth control instruction included in the control instructions;

a mapping unit configured to map the interpolated texture data items onto the interpolated model data item, using a third manner designated by a fifth control instruction included in the control instructions; and

an output unit configured to output data acquired by the mapping unit as computer graphics data.

13. The apparatus according to claim 12, wherein:

the data selection unit is configured to determine what capacity of data be stored in a memory, based on the first control instruction;

the determination unit is configured to determine the arrangement of the at least one model data items and the texture data items to enhance a hit rate of the texture data items in the memory and to minimize number of operations of loading the texture data items; and

the storage unit is configured to store the texture data items into the memory after performing an affine transformation process on the texture data items for converting the texture data items into normalized rectangular data, or after rearranging the texture data items, in order to arrange the texture data items in the arrangement determined by the determination unit.

14. The apparatus according to claim 12, wherein the rendering-data selection unit is configured to perform switching between selection, from the stored texture data items, of texture data items closest to the second control instruction, and selection, from the stored texture data items, of a single texture data item closest to the second control instruction, the rendering-data selection unit being configured to increase number of texture data items to be selected from the stored texture data items, at the time that a first change included in changes in the conditions indicates that quality is to be enhanced, the rendering-data selection unit being configured to decrease the number of texture data items to be selected from the stored texture data items, at the time that a second change included in the changes in the conditions indicates that quality fails to be enhanced, the rendering-data selection unit being configured to select first texture data corresponding to a change included in the changes in the conditions, at the time that the first texture data covers second texture data corresponding to another change included in the changes in the conditions.

15. The apparatus according to claim 12, wherein:

the generation unit is configured to generate, as the second control instruction, a material characteristic instruction for causing a characteristic of a texture material to be reflected in accordance with the interpolated texture data; and

the rendering-data selection unit is configured to select, from the stored model data items and the stored texture data items, a model data item corresponding to the material characteristic instruction, or animation data contained in the model data item corresponding to the material characteristic instruction.

16. The apparatus according to claim 12, wherein the correction unit is configured to receive, as the third control instruction, an instruction to correct each of the texture data items selected for rendering, in accordance with physical model data based on a physical law, or in accordance with physical model data based on texture data items included in the texture data items.

17. The apparatus according to claim 12, wherein the correction unit is configured to receive, as the third control instruction, an instruction to correct position coordinates of vertex data contained in the model data item selected for rendering, in accordance with the texture data items selected for rendering, the model data item selected for rendering, or the animation data.

18. The apparatus according to claim 12, wherein:

if the correction unit is configured to perform a greater scale of correction on the texture data items selected for rendering and the model data item selected for rendering, the correction unit is configured to impart a lower degree of reliability to the texture data items selected for rendering and the model data item selected for rendering; and

if the lower degree of reliability is imparted, the interpolation unit is configured to receive, as the fourth control instruction, an instruction to set a lower interpolation rate.

19. The apparatus according to claim 12, wherein:

the generation unit is configured to generate reference texture data as the fourth control instruction; and

the interpolation unit is configured to correct the interpolated texture data items to make the interpolated texture data items close to the reference texture data.

20. The apparatus according to claim 12, wherein the generation unit is configured to generate the control instructions by analyzing the model data items and the texture data items.

21. The apparatus according to claim 12, wherein the generation unit is configured to analyze each of the texture data items to divide each of texture data items into a first portion which includes a continuous change and is expressed by physical model data, and a second portion which includes a discontinuous change and is only expressed by each of the texture data items, the generation unit being configured to generate the physical model data based on a physical law or the analysis result of each of the texture data items, the generation unit being configured to generate the control instruction to select each of the texture data items, the control instruction indicating a difference between the first portion and each of the texture data items.

22. The apparatus according to claim 21, wherein the generation unit is configured to generate the control instruction to the data selection unit, the rendering-data selection unit, the correction unit, the interpolation unit and the mapping unit.

23. A texture mapping method comprising:

acquiring a plurality of texture data items acquired or generated under a plurality of conditions, and a plurality of model data items;

generating control data used for texture mapping, in accordance with the texture data items and the model data items;

generating control instructions for texture mapping processes corresponding to the control data;

selecting at least one model data item and texture data items from the texture data items and the model data items, based on a first control instruction included in the control instructions;

determining arrangement of the at least one model data item and the texture data items;

storing the at least one model data item and the texture data items, based on the determined arrangement;

selecting, from the stored model data item and the stored texture data items, a model data item and a plurality of texture data items used for rendering, based on a second control instruction included in the control instructions;

correcting the model data item selected for rendering and the texture data items selected for rendering, using a first manner designated by a third control instruction included in the control instructions;

performing interpolation on the corrected model data item and on the corrected texture data items, using a second manner designated by a fourth control instruction included in the control instructions;

mapping the interpolated texture data items onto the interpolated model data item, using a third manner designated by a fifth control instruction included in the control instructions; and

outputting data acquired by mapping the interpolated texture data items as computer graphics data.

24. A texture mapping method comprising:

acquiring a plurality of texture data items acquired or generated under a plurality of conditions, and a plurality of model data items, and control data used for texture mapping;

generating control instructions corresponding to the control data for texture mapping processes;

selecting at least one model data item and texture data items from the texture data items and the model data items, based on a first control instruction included in the control instructions;

determining arrangement of the at least one model data items and the texture data items;

preparing a storage unit which stores the at least one model data item and the texture data items, based on the determined arrangement;

selecting, from the stored model data item and the stored texture data items, a model data item and a plurality of texture data items used for rendering, based on a second control instruction included in the control instructions;

correcting the model data item selected for rendering and the texture data items selected for rendering, using a first manner designated by a third control instruction included in the control instructions;

performing interpolation on the corrected model data item and on the corrected texture data items, using a second manner designated by a fourth control instruction included in the control instructions;

mapping the interpolated texture data items onto the interpolated model data item, using a third manner designated by a fifth control instruction included in the control instructions; and

outputting data acquired by mapping the interpolated texture data items as computer graphics data.

25. A texture mapping program stored in a computer readable medium, comprising:

means for instructing a computer to acquire a plurality of texture data items acquired or generated under a plurality of conditions, and a plurality of model data items;

means for instructing the computer to generate control data used for texture mapping, in accordance with the texture data items and the model data items;

means for instructing the computer to generate control instructions for texture mapping processes corresponding to the control data;

means for instructing the computer to select at least model data item and texture data items from the texture data items and the model data items, based on a first control instruction included in the control instructions;

means for instructing the computer to determine arrangement of the at least one model data item and the texture data items;

means for instructing the computer to access to a storage unit configured to store the at least one model data item and the texture data items, based on the determined arrangement;

means for instructing the computer to select, from the stored model data item and the stored texture data items, a model data item and a plurality of texture data items used for rendering, based on a second control instruction included in the control instructions;

means for instructing the computer to correct the model data item selected for rendering and the texture data items selected for rendering, using a first measure designated by a third control instruction included in the control instructions;

means for instructing the computer to perform interpolation on the corrected model data item and on the corrected texture data items, using a second measure designated by a fourth control instruction included in the control instructions;

means for instructing the computer to map the interpolated texture data items onto the interpolated model data item, using a third measure designated by a fifth control instruction included in the control instructions; and

means for instructing the computer to output data acquired by mapping the interpolated texture data items as computer graphics data.

26. A texture mapping program stored in a computer readable medium, comprising:

means for instructing a computer to acquire a plurality of texture data items acquired or generated under a plurality of conditions and a plurality of model data items, and control data used for texture mapping;

means for instructing the computer to generate control instructions corresponding to the control data for texture mapping processes;

means for instructing the computer to select at least one model data item and texture data items from the texture data items and the model data items, based on a first control instruction included in the control instructions;

means for instructing the computer to determine arrangement of the at least one model data item and the texture data items;

means for instructing the computer to access to a storage unit configured to store the at least one model data item and the texture data items, based on the determined arrangement;

means for instructing the computer to select, from the stored model data item and the stored texture data items, a model data item and a plurality of texture data items used for rendering, based on a second control instruction included in the control instructions;

means for instructing the computer to correct the model data item selected for rendering and the texture data items selected for rendering, using a first measure designated by a third control instruction included in the control instructions;

means for instructing the computer to perform interpolation on the corrected model data item and on the corrected texture data items, using a second measure designated by a fourth control instruction included in the control instructions;

means for instructing the computer to map the interpolated texture data items onto the interpolated model data item, using a third measure designated by a fifth control instruction included in the control instructions; and

means for instructing the computer to output data acquired by mapping the interpolated texture data items as computer graphics data.