Systems and methods for controlling color balance for a photographic illuminator
First Claim
Patent Images
1. A method for generating color illumination having a target color balance, the method comprising:
- determining the target color balance;
generating a transmission factor for each color channel of a plurality of color channels within an active color filter based on the target color balance and color characteristics of an illumination source; and
activating each color channel of a plurality of color channels based on the corresponding transmission factor to transmit illumination having the target color balance.
0 Assignments
0 Petitions
Accused Products
Abstract
A system and method for generating controlled illumination having a color balance that corresponds to prevailing ambient color balance. A multi-spectral light source having a given spectral characteristic is filtered through an active color filter to produce multi-spectral light conforming to the prevailing ambient color balance. Embodiments of the present invention advantageously enable photographic capture of images without introducing color balance inconsistencies seen in prior art illumination solutions.
67 Citations
20 Claims
-
1. A method for generating color illumination having a target color balance, the method comprising:
-
determining the target color balance; generating a transmission factor for each color channel of a plurality of color channels within an active color filter based on the target color balance and color characteristics of an illumination source; and activating each color channel of a plurality of color channels based on the corresponding transmission factor to transmit illumination having the target color balance. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A system for generating color illumination having a target color balance, the system comprising:
-
an active color filter, configured to selectively transmit different color components of source illumination based on corresponding transmission factors; and a controller, configured to; determine the target color balance; generate a transmission factor for each color channel of a plurality of color channels within the active color filter based on the target color balance and color characteristics of the source illumination; and activate the active color filter using a control signal representing the transmission factors. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A portable photographic system, the system comprising:
-
a digital camera subsystem configured to sample and store photographic images; a multi-spectral light source, configured to provide the source illumination when triggered by the digital camera subsystem; an active color filter, configured to selectively transmit different color components of the multi-spectral light source based on corresponding transmission factors; and a controller, configured to; determine the target color balance; generate a transmission factor for each color channel of a plurality of color channels within the active color filter based on the target color balance and color characteristics of the multi-spectral light source; and activate the active color filter using a control signal representing the transmission factors. - View Dependent Claims (18, 19, 20)
-
Specification