System, method, and computer program for capturing an image with correct skin tone exposure

1. A device, comprising:

a non-transitory memory storing instructions;

a camera module; and

one or more processors in communication with the non-transitory memory and the camera module, wherein the one or more processors execute the instructions to:

cause the camera module to capture one or more images of a scene;

detect one or more faces having threshold skin tone within the scene;

based on the detected one or more faces, segment the scene into one or more face regions and one or more non-face regions;

construct a model of the one or more faces based on a depth map and a texture map, the depth map including at least spatial data of the one or more faces, and the texture map includes surface characteristics of the one or more faces;

modify a contrast condition associated with visible skin for each of the detected one or more faces based on the model; and

process the one or more face regions to generate a final image.

2. The device of claim 1 , wherein the threshold skin tone is a predefined average intensity or histogram median.

3. The device of claim 2 , wherein the predefined average intensity or histogram median is based on the one or more face regions.

4. The device of claim 1 , wherein the device is operable such that the one or more images include at least one high dynamic range (HDR) image.

5. The device of claim 1 , wherein the device is operable such that the one or more images include two or more images such that a first image of the two or more images is exposed so that a median intensity of the one or more face regions defines a mid-point intensity of the first image, and a second image of the two or images is exposed so that a median intensity of the one or more non-face regions defines a mid-point intensity of the second image.

6. The device of claim 5 , wherein the device is operable such that the processing includes processing the one or more non-face regions and applying an HDR effect by blending, using a strength coefficient, the first image and the second image.

7. The device of claim 1 , wherein the device is operable such that the capturing is of a video stream.

8. The device of claim 1 , wherein the device is operable such that the processing includes applying a local equalization on pixels within the one or more face regions.

9. The device of claim 1 , wherein the device is operable such that a second model is constructed of one or more individuals depicted within the scene based on the depth map and at least one visual image.

10. The device of claim 9 , wherein the depth map and the texture map are used to construct a three-dimensional (3D) model of the one or more faces.

11. The device of claim 9 , wherein the at least one visual image includes a surface texture.

12. The device of claim 11 , wherein the surface texture includes one or more features associated with each of the one or more faces.

13. The device of claim 1 , wherein the device is operable such that the segmenting includes a transition region between the one or more face regions and the one or more non-face regions.

14. The device of claim 1 , wherein the surface characteristics include at least one of color, moles, cuts, scars, freckles, or facial hair.

15. The device of claim 1 , wherein the device is operable such that a lighting gradient is used to modify post-processing lighting conditions on the one or more faces.

16. The device of claim 1 , wherein the device is operable to further execute the instructions to correct a color of light associated with a tone of the visible skin associated with each of the one or more faces based on a measurement of an ambient lighting color balance.

17. The device of claim 1 , wherein the device is operable such that a histogram associated with the final image shows correct exposure data for the scene.

18. A computer-implemented method, comprising:

capturing, using a camera, one or more images of a scene;

detecting, using a processor, one or more faces having threshold skin tone within the scene;

based on the detected one or more faces, segmenting, using the processing, the scene into one or more face regions and one or more non-face regions;

constructing a model of the one or more faces based on a depth map and a texture map, the depth map including at least spatial data of the one or more faces, and the texture map includes surface characteristics of the one or more faces;

modifying a contrast condition associated with visible skin for each of the detected one or more faces based on the model; and

processing, using the processor, the one or more face regions to generate a final image.

19. A computer program product comprising computer executable instructions stored on a non-transitory computer readable medium that when executed by a processor instruct the processor to:

cause a camera module to capture one or more images of a scene;

detect one or more faces having threshold skin tone within the scene;

based on the detected one or more faces, segment the scene into one or more face regions and one or more non-face regions;

construct a model of the one or more faces based on a depth map and a texture map, the depth map including at least spatial data of the one or more faces, and the texture map includes surface characteristics of the one or more faces;

modify a contrast condition associated with visible skin for each of the detected one or more faces based on the model; and

process the one or more face regions to generate a final image.