Method for dynamic range editing
View Patent ↗A method of displaying a high dynamic range image, comprising receiving the high dynamic range image, calculating a first set of tone mapping parameters as a function of the high dynamic range image, sub-sampling the first set of tone mapping parameters at a first resolution to create a first sub-sampled parameter set, creating a first tone-mapped image by processing the high dynamic range image as a function of the first sub-sampled parameter set, and displaying the first tone-mapped image. A method of composting a plurality of versions of an image to create the high dynamic range image is also disclosed such that the compositing may be modified as a function of received user input.
1. A computer-implemented method to generate a high dynamic range image, the method comprising:
receiving a plurality of images, each of the plurality of images having an image detail represented by a value with a characteristic having a value that represents the characteristic for the respective one of the plurality of images, wherein at least two of the images have a different value for the image detail characteristic;
determining a parameter, wherein the parameter is determined based on the values of the characteristic image detail for the plurality of images;
determining a response function based on the plurality of images;
after determining the response function, generating a plurality of edited images by altering the value of the characteristic image detail for each of the plurality of images based on the parameter; and
merging the plurality of edited images to construct a high dynamic range output image; and
tone mapping the high dynamic range output image based, at least in part on the response function.
2. The computer-implemented method of claim 1 , wherein the characteristic image detail is color temperature.
3. The computer-implemented method of claim 1 , wherein the characteristic image detail is one of: brightness, contrast and sharpness.
4. The computer-implemented method of claim 1 , wherein determining the parameter comprises determining a range of the values of the characteristic image detail for the plurality of images and further determining a representative value within the range, wherein the parameter is based on the representative value.
5. The computer-implemented method of claim 4 , wherein the characteristic image detail is color temperature and wherein the range of the values includes a darkest color temperature value of at least one of the plurality of images and a lightest color temperature value of at least one of the plurality of images.
6. The computer-implemented method of claim 1 , wherein determining the parameter includes receiving a user input of the parameter.
7. A non-transitory computer-readable medium storing instructions to generate a high dynamic range image that, when executed by one or more processors of a capture device, cause the one or more processors to:
receive a plurality of images, each of the plurality of images having an image detail represented by a value with a characteristic having a value that represents the characteristic for the respective one of the plurality of images, wherein at least two of the images have a different value for the image detail characteristic;
determine a parameter, wherein the parameter is determined based on the values of the characteristic image detail for the plurality of images;
determine a response function based on the plurality of images;
after determining the response function, generating a plurality of edited images by altering the value of the characteristic image detail for each of the plurality of images based on the parameter; and
merge the plurality of edited images to construct a high dynamic range output image; and
tone mapping the high dynamic range output image based, at least in part, on the response function.
8. The computer-readable medium of claim 7 , wherein the characteristic image detail is color temperature.
9. The computer-readable medium of claim 7 , wherein the characteristic image detail is one of: brightness, contrast and sharpness.
10. The computer-readable medium of claim 7 , wherein determining the parameter comprises determining a range of the values of the characteristic image detail for the plurality of images and further determining a representative value within the range, wherein the parameter is based on the representative value.
11. The computer-readable medium of claim 10 , wherein the characteristic image detail is color temperature and wherein the range of the values includes a darkest color temperature value of at least one of the plurality of images and a lightest color temperature value of at least one of the plurality of images.
12. The computer-readable medium of claim 7 , wherein determining the parameter includes receiving a user input of the parameter.
13. A system to generate a high dynamic range image, the system comprising:
one or more processors; and
a memory coupled to the one or more processors, the memory configured to store instructions that upon execution by the one or more processors cause the one or more processors to:
receiving a plurality of images, each of the plurality of images having an image detail represented by a value with a characteristic having a value that represents the characteristic for the respective one of the plurality of images, wherein at least two of the images have a different value for the image detail characteristic;
determine a parameter, wherein the parameter is determined based on the values of the characteristic image detail for the plurality of images;
determine a response function based on the plurality of images;
after determining the response function, generating a plurality of edited images by altering the value of the characteristic image detail for each of the plurality of images based on the parameter; and
merge the plurality of edited images to construct a high dynamic range output image; and
tone mapping the high dynamic range output image based, at least in part, on the response function.
14. The system of claim 13 , wherein the characteristic image detail is color temperature.
15. The system of claim 13 , wherein the characteristic image detail is one of: brightness, contrast and sharpness.
16. The system of claim 13 , wherein determining the parameter comprises determining a range of the values of the characteristic image detail for the plurality of images and further determining a representative value within the range, wherein the parameter is based on the representative value.
17. The system of claim 16 , wherein the characteristic image detail is color temperature and wherein the range of the values includes a darkest color temperature value of at least one of the plurality of images and a lightest color temperature value of at least one of the plurality of images.