Band dependent linearization for multiband remotely sensed and aerial imagery

1. A system for processing a multiband image, comprising:

non-transitory digital computer memory for storing a multiband image having multiple bands of image data; and

processing circuitry for processing the multiband image, wherein the processing circuitry (a) determines pixel locations in the bands of the multiband image having values meeting a corresponding band-specific value threshold for each of the bands of the multiband image, (b) determines a corresponding band-specific correction factor for each of the visible bands of the multiband image based on the determined pixel locations, and (c) applies the corresponding band-specific correction factor to the respective visible bands of the multiband image to produce a corrected image,

wherein the values meet the corresponding band-specific value threshold if the values are above a corresponding band-specific white value threshold,

wherein the corresponding band-specific correction factor is based on the largest average of values at least as large as the corresponding band-specific white value threshold value.

2. The system as claimed in claim 1 , wherein the processing circuitry further pre-filters the multiband image utilizing parameters captured contemporaneously with the capturing of the multiband image.

3. The system as claimed in claim 2 , wherein the parameters are stored in the multiband image.

4. The system as claimed in claim 2 , wherein the parameters are stored in a database separately from the multiband image.

5. The system as claimed in claim 1 , further comprising circuitry for displaying the corrected image.

6. The system as claimed in claim 5 , wherein the processing circuitry further receives a changed band-specific white value threshold, updates the multiband image based on the changed band-specific white value threshold and redisplays the corrected image generated based on the changed band-specific white value threshold.

7. A system for processing a multiband image, comprising:

non-transitory digital computer memory for storing a multiband image having multiple bands of image data; and

processing circuitry for processing the multiband image, wherein the processing circuitry (a) determines pixel locations in the bands of the multiband image having values meeting a corresponding band-specific value threshold for each of the bands of the multiband image, (b) determines a corresponding band-specific correction factor for each of the visible bands of the multiband image based on the determined pixel locations, and (c) applies the corresponding band-specific correction factor to the respective visible bands of the multiband image to produce a corrected image, wherein the values meet the corresponding band-specific value threshold if the values are below a corresponding band-specific black value threshold,

wherein the corresponding band-specific correction factor is based on the smallest average of values at most as large as the corresponding band-specific black value threshold value.

8. The system as claimed in claim 7 , further comprising circuitry for displaying the corrected image.

9. The system as claimed in claim 8 , wherein the processing circuitry further receives a changed band-specific black value threshold, updates the multiband image based on the changed band-specific black value threshold and redisplays the corrected image generated based on the changed band-specific black value threshold.

10. The system as claimed in claim 7 , wherein the processing circuitry further pre-filters the multiband image utilizing parameters captured contemporaneously with the capturing of the multiband image.

11. The system as claimed in claim 10 , wherein the parameters are stored in the multiband image.

12. The system as claimed in claim 10 , wherein the parameters are stored in a database separately from the multiband image.

13. A computer-implemented method for processing a multiband image having multiple bands of image data, the method comprising:

utilizing a processor and a non-transitory digital computer memory storing computer instructions to control the processor to perform the steps of:

determining pixel locations in the bands of the multiband image having values meeting a corresponding band-specific value threshold for each of the bands of the multiband image;

determining a corresponding band-specific correction factor for each of the visible bands of the multiband image based on the determined pixel locations; and

applying the corresponding band-specific correction factor to the respective visible bands of the multiband image to produce a corrected image, wherein the values meet the corresponding band-specific value threshold if the values are above a corresponding band-specific white value threshold,

wherein the corresponding band-specific correction factor is based on the largest average of values at least as large as the corresponding band-specific white value threshold value.

14. The method as claimed in claim 13 , further comprising:

pre-filtering the multiband image utilizing parameters captured contemporaneously with the capturing of the multiband image.

15. The method as claimed in claim 14 , wherein the parameters are stored in the multiband image.

16. The method as claimed in claim 14 , wherein the parameters are stored in a database separately from the multiband image.

17. The method as claimed in claim 13 , further comprising displaying the corrected image.

18. The method as claimed in claim 17 , further comprising:

receiving a changed band-specific white value threshold, updating the multiband image based on the changed band-specific white value threshold and redisplaying the corrected image generated based on the changed band-specific white value threshold.

19. A computer-implemented method for processing a multiband image having multiple bands of image data, the method comprising:

utilizing a processor and a non-transitory digital computer memory storing computer instructions to control the processor to perform the steps of:

determining pixel locations in the bands of the multiband image having values meeting a corresponding band-specific value threshold for each of the bands of the multiband image;

determining a corresponding band-specific correction factor for each of the visible bands of the multiband image based on the determined pixel locations; and

applying the corresponding band-specific correction factor to the respective visible bands of the multiband image to produce a corrected image,

wherein the values meet the corresponding band-specific value threshold if the values are below a corresponding band-specific black value threshold,

wherein the corresponding band-specific correction factor is based on the smallest average of values at most as large as the corresponding band-specific black value threshold value.

20. The method as claimed in claim 19 , further comprising displaying the corrected image.

21. The method as claimed in claim 20 , further comprising:

receiving a changed band-specific black value threshold, updating the multiband image based on the changed band-specific black value threshold and redisplaying the corrected image generated based on the changed band-specific black value threshold.