Method, apparatus and system for processing a display from a surround view camera solution

1. A multi-camera image processing method, comprising:

performing geometric alignment to produce a geometric output, wherein performing the geometric alignment includes:

performing perspective correction on each of a plurality of frames;

performing corner detection in overlapping areas to find regions of interest;

filtering corner data to locate corners;

calculating a descriptor for each of the corners;

matching corners from two cameras using scores;

finding perspective matrices for each of the frames for minimizing distances between matched features; and

creating a geometric lookup table that encodes fisheye lens distortion correction and perspective transformation information, the method further comprising:

performing photometric alignment to produce a photometric output and a blending output;

using the geometric output and the photometric output for performing a synthesis function for at least one of blending and stitching images obtained from the two cameras; and

displaying an image obtained from the synthesis function.

2. The multi-camera image processing method of claim 1 , wherein the two cameras are two adjacent cameras, and wherein the synthesis function comprises using an alpha blend to blend images from the two adjacent cameras at a seam boundary to eliminate irregularities at the seam boundary caused by image data from the two adjacent cameras.

3. The multi-camera image processing method of claim 1 , wherein the geometric function comprises a camera calibration.

4. The multi-camera image processing method of claim 3 , wherein the camera calibration is at least one of a dynamic calibration and a one-time calibration.

5. The multi-camera image processing method of claim 1 , wherein the input to the synthesis function includes fisheye frames from the two cameras, the geometric output, the photometric output.

6. The multi-camera image processing method of claim 1 , wherein the geometric output, the photometric output and blending output are saved in a lookup table in a memory, a geometric lookup table and a photometric lookup table, respectively.

7. The multi-camera image processing method of claim 6 , wherein an output of the photometric lookup table has 255 entries for 8-bit data input.

8. The multi-camera image processing method of claim 1 , wherein the geometric alignment comprises camera calibration using calibration charts independent of any camera parameters.

9. An image processing system, comprising:

a memory; and

a processor coupled to the memory, the processor configured to:

perform geometric alignment to produce a geometric output;

perform perspective correction on each of a plurality of frames;

perform corner detection in overlapping areas to find regions of interest;

filter corner data to locate corners;

calculate a descriptor for each of the corners;

match the corners from two cameras using scores;

find perspective matrices for each of the frames for minimizing distances between matched features;

create a geometric lookup table that encodes fisheye lens distortion correction and perspective transformation information;

perform photometric alignment to produce a photometric output and blending output;

use the geometric output and the photometric output for performing a synthesis function for at least one of blending and stitching images obtained from the two cameras; and

display an image obtained from the synthesis function.

10. The image processing system of claim 9 , wherein the two cameras are two adjacent cameras, and wherein the synthesis function comprises using an alpha blend to blend images from the two adjacent cameras at a seam boundary to eliminate irregularities at the seam boundary caused by image data from the two adjacent cameras.

11. The image processing system of claim 9 , wherein the geometric function comprises a camera calibration.

12. The image processing system of claim 11 , wherein the camera calibration is at least one of a dynamic calibration and a one-time calibration.

13. The image processing system of claim 9 , wherein the input to the synthesis function includes fisheye frames from the multi-cameras, the geometric output, the photometric output.

14. The image processing system of claim 9 , wherein the geometric output, the photometric output and blending output are saved in a lookup table in the memory, a geometric lookup table and a photometric lookup table, respectively.

15. The image processing system of claim, wherein an output of the photometric lookup table has 255 entries for 8-bit data input.

16. The image processing system of claim 9 , wherein the geometric alignment comprises camera calibration using calibration charts independent of any camera parameters.