Emulating light sensitivity of a target

A method of emulating light sensitivity of a human during video playback, the method comprising, by a computer system:

• initiating playback of a video recording;
• publishing the video recording for display responsive to the initiating, the publishing comprising, for each of at least some frames of the video recording:
• receiving an image;
• accessing image metadata associated with the image, wherein the image metadata comprises at least one encoding of different combinations of gain values and exposure settings obtained from test images processing in a controlled lighting environment;
• discovering, from the image metadata, information related to an exposure setting and a gain value used by a camera in capture of the image;
• deriving, from stored camera metadata for the camera, information related to a luminous flux associated with the exposure setting and the gain value used by the camera in the capture of the image;
• determining an adjusted gain value corresponding to a human light sensitivity using the derived information related to the luminous flux;
• and
• generating an adjusted image using the adjusted gain value;
• and
• providing the adjusted image for display.

A computer system comprising a processor and memory, wherein the processor and memory in combination perform a method comprising, for each of at least some frames of a video recording:

• receiving an image;
• accessing image metadata associated with the image, wherein the image metadata comprises at least one encoding of different combinations of gain values and exposure settings obtained from test images processing in a controlled lighting environment;
• discovering, from the image metadata, information related to an exposure setting and a gain value used by a camera in capture of the image;
• deriving, from stored camera metadata for the camera, information related to a luminous flux associated with the exposure setting and the gain value used by the camera in the capture of the image;
• determining an adjusted gain value corresponding to a human light sensitivity using the derived information related to the luminous flux;
• and
• generating an adjusted image using the adjusted gain value.