Method and apparatus for image blending
Methods and apparatuses for blending two images using vector table look up operations. In one aspect of the invention, a method to blend two images includes: loading a vector of keys into a vector register; converting the vector of keys into a first vector of blending factors for the first image and a second vector of blending factors for the second image using a plurality of look up tables; and computing an image attribute for the blended image using the blending factors.
1. A computer-implemented method to blend two images, the method comprising:
loading a vector of keys into a vector register;
converting the vector of keys into a first vector of blending factors for a first image and a second vector of blending factors for a second image using a plurality of look up tables in a vector look up unit; and
computing an image attribute for a blended image using the blending factors, the blended image being displayed by a display of a digital processing system.
2. A method as in claim 1 wherein the blending factors are one of:
a) floating point numbers;
b) fixed point numbers; and
c) integers.
3. A computer-implemented method to blend two images, the method comprising:
loading a vector of keys into a vector register;
converting the vector of keys into a first vector of blending factors for a first image and a second vector of blending factors for a second image using a plurality of look up tables in a vector look up unit, where in the converting comprises:
generating a first vector of indices in a vector register by replicating a first subset of the vector of keys as a first subset of the first vector of indices for looking up first blending factors for the first image and replicating the first subset of the vector of keys as a second subset of the first vector of indices for looking up second blending factors for the second image; and
looking up simultaneously the first and second blending factors using the first vector of indices in the vector look up unit; and
computing an image attribute for a blended image using the blending factors, the blended image being displayed by a display of a distal processing system.
4. A method as in claim 3 further comprising:
storing the first blending factors into the first vector of blending factors and the second blending factors into the second vector of blending factors.
5. A computer-implemented method to blend two images, the method comprising:
loading a vector of keys into a vector register;
converting the vector of keys into a first vector of blending factors for a first image and a second vector of blending factors for a second image using a plurality of look up tables in a vector look up unit, wherein the converting comprises:
generating a first vector of indices in a vector register, one key in the vector of keys being replicated as a first plurality of indices in the first vector of indices for looking up respectively a plurality of bit segments of a first blending factor; and
looking up simultaneously a first vector of blending factors comprising the first blending factor using the first vector of indices in the vector look up unit; and
computing an image attribute for a blended image using the blending factors, the blended image being displayed by a display of a digital processing system.
6. A computer-implemented method to blend two images, the method comprising:
loading a first vector of keys into a vector register;
loading a second vector of keys into a vector register;
converting the first vector of keys into a first vector of blending factors for a first image and the second vector of keys into a second vector of blending factors for a second image using a plurality of look up tables in a vector look up unit; and
computing an image attribute for a blended image using the blending factors, the blended image being displayed by a display of a digital processing system.
7. A method as in claim 6 wherein the blending factors are one of:
a) floating point numbers;
b) fixed point numbers; and
c) integers.
8. A computer-implemented method to blend two images, the method comprising:
loading a first vector of keys into a vector register;
loading a second vector of keys into a vector register;
converting the first vector of keys into a first vector of blending factors for a first image and the second vector of keys into a second vector of blending factors for a second image using a plurality of look up tables in a vector look up unit, wherein the converting comprises:
generating a first vector of indices in a vector register by replicating a first subset of the first vector of keys as a first subset of the first vector of indices for looking up first blending factors for the first image and replicating a first subset of the second vector of keys as a second subset of the first vector of indices for looking up second blending factors for the second image; and
looking up simultaneously the first and second blending factors using the first vector of indices in the vector look up unit; and
computing an image attribute for a blended image using the blending factors, the blended image being displayed by a display of the digital processing system.
9. A method as in claim 8 further comprising:
storing the first blending factors into the first vector of blending factors and the second blending factors into the second vector of blending factors.
10. A computer-implemented method to blend two images, the method comprising:
loading a first vector of keys into a vector register;
loading a second vector of keys into a vector register;
converting the first vector of keys into a first vector of blending factors for a first image and the second vector for keys into a second vector of blending factors for a second image using a plurality of look up tables in a vector look up unit, wherein the converting comprises:
generating a first vector of indices in a vector register, one key in the first vector of keys being replicated as a first plurality of indices in the first vector of indices for looking up respectively a plurality of bit segments of a first blending factor; and
looking up simultaneously a first vector of blending factors comprising the first blending factor using the first vector of indices in the vector look up unit; and
computing an image attribute for a blended image using the blending factors, the blending image being displayed by a display of a digital processing system.
11. A computer readable media having stored executable computer program instructions which when executed by a digital processing system cause said system to perform a method to blend two images, the method comprising:
loading a vector of keys into a vector register;
converting the vector of keys into a first vector of blending factors for a first image and a second vector of blending factors for a second image using a plurality of look up tables in a vector look up unit; and
computing an image attribute for a blended image using the blending factors, the blended image being displayed by a display of the digital processing system.
12. A media as in claim 11 wherein the blending factors are one of:
a) floating point numbers;
b) fixed point numbers; and
c) integers.
13. A computer readable media having stored executable computer program instructions which when executed by a digital processing system cause said system to perform a method to blend two images, the method comprising:
loading a vector of keys into a vector register;
converting the vector of keys into a first vector of blending factors for a first image and a second vector of blending factors for a second image using a plurality of look up tables in a vector look up unit, wherein the converting comprises:
generating a first vector of indices in a vector register by replicating a first subset of the vector of keys as a first subset of the first vector of indices for looking up first blending factors for the first image and replicating the first subset of the vector of keys as a second subset of the first vector of indices for looking up second blending factors for the second image; and
looking up simultaneously the first and second blending factors using the first vector of indices in the vector look up unit; and
computing an image attribute for a blended image using the blending factors, the blended image being displayed by a display of the digital processing system.
14. A media as in claim 13 wherein the method further comprises:
storing the first blending factors into the first vector of blending factors and the second blending factors into the second vector of blending factors.
15. A computer readable media having stored executable computer pro gram instructions which when executed by a digital processing system cause said system to perform a method to blend two images, the method comprising:
loading a vector of keys into a vector register;
converting the vector of keys into a first vector of blending factors for a first image and a second vector of blending factors for a second image using a plurality of look up tables in a vector look up unit, wherein the converting comprises:
generating a first vector of indices in a vector register, one key in the vector of keys being replicated as a first plurality of indices in the first vector of indices for looking up respectively a plurality of bit segments of a first blending factor; and
looking up simultaneously a first vector of blending factors comprising the first blending factor using the first vector of indices in the vector look up unit; and
computing an image attribute for a blended image using the blending factors, the blended image being displayed by a display of the digital processing system.
16. A computer readable media having stored executable computer program instructions which when executed by a digital processing system cause said system to perform a method to blend two images, the method comprising:
loading a first vector of keys into a vector register;
loading a second vector of keys into a vector register;
converting the first vector of keys into a first vector of blending factors for a first image and the second vector of keys into a second vector of blending factors for a second image using a plurality of look up tables in a vector look up unit; and
computing an image attribute for a blended image using the blending factors, the blended image being displayed by a display of a digital processing system.
17. A media as in claim 16 wherein the blending factors are one of:
a) floating point numbers;
b) fixed point numbers; and
c) integers.
18. A computer readable media having stored executable computer program instructions which when executed by a digital processing system cause said system to perform a method to blend two images, the method comprising:
loading a first vector of keys into a vector register;
loading a second vector of keys into a vector register;
converting the first vector of keys into a first vector of blending factors for a first image and the second vector of keys into a second vector of blending factors for a second image using a plurality of look up tables in a vector look up unit, wherein the converting comprises:
generating a first vector of indices in a vector register by replicating a first subset of the first vector of keys as a first subset of the first vector of indices for looking up first blending factors for the first image and replicating a first subset of the second vector of keys as a second subset of the first vector of indices for looking up second blending factors for the second image; and
looking up simultaneously the first and second blending factors using the first vector of indices in the vector look up unit; and
computing an image attribute for a blended image using the blending factors, the blended image being displayed by a display of the digital processing system.
19. A media as in claim 18 wherein the method further comprises:
storing the first blending factors into the first vector of blending factors and the second blending factors into the second vector of blending factors.
20. A computer readable media having stored executable computer program instructions which when executed by a digital processing system cause said system to perform a method to blend two images, the method comprising:
loading a first vector of keys into a vector register;
loading a second vector of keys into a vector register;
converting the first vector of keys into a first vector of blending factors for a first image and the second vector of keys into a second vector of blending factors for a second image using a plurality of look up tables in a vector look up unit, wherein the converting comprises:
generating a first vector of indices in a vector register, one key in the first vector of keys being replicated as a first plurality of indices in the first vector of indices for looking up respectively a plurality of bit segments of a first blending factor; and
looking up simultaneously a first vector of blending factors comprising the first blending factor using the first vector of indices in the vector look up unit; and
computing an image attribute for a blended image using the blending factors, the blended image being displayed by a display of the digital processing system.
21. A processing system to blend two images, the system comprising:
means for loading a vector of keys into a vector register;
means for converting the vector of keys into a first vector of blending factors for a first image and a second vector of blending factors for a second image using a plurality of look up tables in a vector look up unit; and
means for computing an image attribute for a blended image using the blending factors, the blended image being displayed by a display of the processing system.
22. A processing system as in claim 21 wherein the blending factors are one of:
a) floating point numbers;
b) fixed point numbers; and
c) integers.
23. A processing system to blend two images, the system comprising:
means for loading a vector of keys into a vector register;
means for converting the vector of keys into a first vector of blending factors for a first image and a second vector of blending factors for a second image using a plurality of look up tables in a vector look up unit, wherein the means for converting comprises:
means for generating a first vector of indices in a vector register by replicating a first subset of the vector of keys as a first subset of the first vector of indices for looking up first blending factors for the first image and replicating the first subset of the vector of keys as a second subset of the first vector of indices for looking up second blending factors for the second image; and
means for looking up simultaneously the first and second blending factor using the first vector of indices in the vector look up unit; and
means for computing an image attribute for a blended image using the blending factors, the blended image being displayed by a display of the processing system.
24. A processing system as in claim 23 further comprising:
means for storing the first blending factors into the first vector of blending factors and the second blending factors into the second vector of blending factors.
25. A processing system to blend two images, the system comprising:
means for loading a vector of keys into a vector register;
means for converting the vector of keys into a first vector of blending factors for a first image and a second vector of blending factors for a second image using a plurality of look up tables in a vector look up unit, wherein the means for converting comprises:
means for generating a first vector of indices in a vector register, one key in the vector of keys being replicated as a first plurality of indices in the first vector of indices for looking up respectively a plurality of bit segments of a first blending factor; and
means for looking up simultaneously a first vector of blending factors comprising the first blending factor using the first vector of indices in the vector look up unit; and
means for computing an image attribute for a blended image using the blending factors, the blended image being displayed by a display of the processing system.
26. A processing system to blend two images, the system comprising:
means for loading a first vector of keys into a vector register;
means for loading a second vector of keys into a vector register;
means for converting the first vector of keys into a first vector of blending factors for a first image and the second vector of keys into a second vector of blending factors for a second image using a plurality of look up tables in a vector look up unit; and
means for computing an image attribute for a blended image using the blending factors, the blended image being displayed by a display of the processing system.
27. A processing system as in claim 26 wherein the blending factors are one of:
a) floating point numbers;
b) fixed point numbers; and
c) integers.
28. A processing system to blend two images, the system comprising:
means for loading a first vector of keys into a vector register;
means for loading a second vector of keys into a vector register;
means for converting the first vector of keys into a first vector of blending factors for a first image and the second vector of keys into a second vector of blending factors for a second image using a plurality of look up tables in a vector look up unit, wherein the means for converting comprises:
means for generating a first vector of indices in a vector register by replicating a first subset of the first vector of keys as a first subset of the first vector of indices for looking up first blending factors for the first image and replicating a first subset of the second vector of keys as a second subset of the first vector of indices for looking up second blending factors for the second image; and
means for looking up simultaneously the first and second blending factors using the first vector of indices in the vector look up unit; and
means for computing an image attribute for a blended image using the blending factors, the blended image being displayed by a display of the processing system.
29. A processing system as in claim 28 further comprising:
means for storing the first blending factors into the first vector of blending factors and the second blending factors into the second vector of blending factors.
30. A processing system to blend two images, the system comprising:
means for loading a first vector of keys into a vector register;
means for loading a second vector of keys into a vector register;
means for converting the first vector of keys into a first vector of blending factors for a first image and the second vector of keys into a second vector of blending factors for a second image using a plurality of look up tables in a vector look up unit, wherein the means for converting comprises:
means for generating a first vector of indices in a vector register, one key in the first vector of keys being replicated as a first plurality of indices in the first vector of indices for looking up respectively a plurality of bit segments of a first blending factor; and
means for looking up simultaneously a first vector of blending factors comprising the first blending factor using the first vector of indices in the vector look up unit; and
means for computing an image attribute for a blended image using the blending factors, the blended image being displayed by a display of the processing system.