Color balance in digital photography

1. An apparatus, comprising:

circuitry for:

receiving a first image and a second image;

estimating a motion transform between the first image and the second image;

rendering an aligned first image and an aligned second image based on the motion transform;

calculating a first intensity for a first pixel associated with the aligned first image;

calculating a second intensity for a second pixel associated with the aligned second image;

calculating a blend value based on the first intensity, the second intensity, and a blend surface function;

generating a blended pixel associated with a blended image by blending the first pixel with the second pixel based on the blend value; and

storing the blended pixel within the blended image;

wherein the blend surface function comprises a first region, a second region, and an intervening discontinuity;

wherein the first region and the second region are each associated with one or more images.

2. The apparatus of claim 1 , wherein the first image comprises a strobe image, and the second image comprises an ambient image.

3. The apparatus of claim 2 , wherein the blend value determines a first contribution of the first pixel associated with the strobe image, and a second contribution of the second pixel associated with the ambient image, associated with the blended pixel.

4. The apparatus of claim 1 , further comprising dynamically configuring the blend surface function based on the aligned first image and the aligned second image.

5. The apparatus of claim 4 , wherein dynamically configuring comprises blending two or more blend surfaces.

6. The apparatus of claim 4 , wherein dynamically configuring comprises modifying at least one region of a blend surface according to intensity clustering associated with the first image and the second image.

7. The apparatus of claim 1 , further comprising dynamically configuring the blend surface function based on a first parameter associated with a user interface tool.

8. The apparatus of claim 1 , wherein calculating the blend value comprises blurring two or more blend value samples associated with the first pixel and the second pixel.

9. The apparatus of claim 1 , wherein the first image comprises an ambient image, and the second image comprises a strobe image.

10. The apparatus of claim 9 , wherein the blend value determines a first contribution of the first pixel associated with the ambient image, and a second contribution of the second pixel associated with the strobe image, associated with the blended pixel.

11. The apparatus of claim 1 , wherein the first intensity and the second intensity comprise coordinates for selecting a point on a blend surface which corresponds to the blend surface function.

12. The apparatus of claim 11 , wherein the blend surface comprises a first region, a second region, and an intervening transition region.

13. The apparatus of claim 11 , wherein the blend surface comprises a strobe dominant region and an ambient dominant region.

14. The apparatus of claim 11 , wherein the blend surface is pre-computed and stored as a texture map.

15. The apparatus of claim 1 , wherein rendering the aligned first image and the aligned second image includes setting a common resolution to be applied to the aligned first image and the aligned second image.

16. The apparatus of claim 1 , wherein the first intensity and the second intensity are calculated using an intensity function, wherein the intensity function includes summing two or more sets of a contribution constant and a color intensity value.

17. The apparatus of claim 16 , wherein each contribution constant and each color intensity value are associated with at least one of red, green, and blue color.

18. A computer program product embodied on a non-transitory computer readable medium, comprising:

code for receiving a first image and a second image;

code for estimating a motion transform between the first image and the second image;

code for rendering an aligned first image and an aligned second image based on the motion transform;

code for calculating a first intensity for a first pixel associated with the aligned first image;

code for calculating a second intensity for a second pixel associated with the aligned second image;

code for calculating a blend value based on the first intensity, the second intensity, and a blend surface function;

code for generating a blended pixel associated with a blended image by blending the first pixel with the second pixel based on the blend value; and

code for storing the blended pixel within the blended image;

wherein the blend surface function comprises a first region, a second region, and an intervening discontinuity;

wherein the first region and the second region are each associated with one or more images.

19. A method, comprising:

receiving a first image and a second image;

estimating a motion transform between the first image and the second image;

rendering an aligned first image and an aligned second image based on the motion transform;

calculating a first intensity for a first pixel associated with the aligned first image;

calculating a second intensity for a second pixel associated with the aligned second image;

calculating a blend value based on the first intensity, the second intensity, and a blend surface function;

generating a blended pixel associated with a blended image by blending the first pixel with the second pixel based on the blend value; and

storing the blended pixel within the blended image;

wherein the blend surface function comprises a first region, a second region, and an intervening discontinuity;

wherein the first region and the second region are each associated with one or more images.

20. An apparatus, comprising:

circuitry for:

receiving a first image and a second image;

estimating a motion transform between the first image and the second image;

rendering an aligned first image and an aligned second image based on the motion transform;

calculating a first intensity for a first pixel associated with the aligned first image;

calculating a second intensity for a second pixel associated with the aligned second image;

calculating a blend value based on the first intensity, the second intensity, and a blend surface function;

generating a blended pixel associated with a blended image by blending the first pixel with the second pixel based on the blend value; and

storing the blended pixel within the blended image;

wherein calculating the blend value comprises blurring two or more blend value samples associated with the first pixel and the second pixel.

21. An apparatus, comprising:

circuitry for:

receiving a first image and a second image;

estimating a motion transform between the first image and the second image;

rendering an aligned first image and an aligned second image based on the motion transform;

calculating a first intensity for a first pixel associated with the aligned first image;

calculating a second intensity for a second pixel associated with the aligned second image;

calculating a blend value based on the first intensity, the second intensity, and a blend surface function;

generating a blended pixel associated with a blended image by blending the first pixel with the second pixel based on the blend value; and

storing the blended pixel within the blended image;

wherein the first intensity and the second intensity comprise coordinates for selecting a point on a blend surface which corresponds to the blend surface function.