COORDINATED ILLUMINATION AND IMAGE SIGNAL CAPTURE FOR ENHANCED SIGNAL DETECTION
First Claim
Patent Images
1. A method for image signal detection comprising:
- obtaining image signals captured under different wavelength illumination;
combining the image signals to increase signal to noise ratio of a signal of interest within the image signals; and
performing signal detection on the combined image signal.
1 Assignment
0 Petitions
Accused Products
Abstract
Signal detection and recognition employees coordinated illumination and capture of images under to facilitate extraction of a signal of interest. Pulsed illumination of different colors facilitates extraction of signals from color channels, as well as improved signal to noise ratio by combining signals of different color channels. The successive pulsing of different color illumination appears white to the user, yet facilitates signal detection, even for lower cost monochrome sensors, as in barcode scanning and other automatic identification equipment.
-
Citations
17 Claims
-
1. A method for image signal detection comprising:
-
obtaining image signals captured under different wavelength illumination; combining the image signals to increase signal to noise ratio of a signal of interest within the image signals; and performing signal detection on the combined image signal. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A method for image signal detection comprising:
-
obtaining image signals captured under different wavelength illumination, wherein the different wavelength illumination comprises pulsing of different color light sources in succession at a rate sufficient for the light source illumination to appear white to a user; from the image signals, separating an image signal corresponding to a channel of illumination corresponding to one of the light sources, and performing signal detection on the image signal corresponding the channel of illumination. - View Dependent Claims (8, 9, 10, 11, 12)
-
-
13. An imaging device comprising:
-
an illumination source for providing pulsed illumination of different wavelength illumination; an image sensor for capturing image signals in coordination with the pulsed illumination; a controller for coordinating the pulsed illumination and corresponding image capture comprises pulsing of different color light sources in succession at a rate sufficient for the light source illumination to appear white to a user; and a signal detector in communication with the image sensor for obtaining image signals captured under different wavelength illumination, the signal detector configured to obtain an image signal corresponding to a channel of illumination corresponding to one of the light sources, and configured to performing signal detection on the image signal corresponding the channel of illumination. - View Dependent Claims (14, 15)
-
-
16. A method of creating an object with a machine readable signal, the method comprising:
-
forming a first layer including a machine readable signal detectable under a first illumination source; and forming a second layer over the first layer, the second layer comprising a material transparent to illumination from the first illumination source. - View Dependent Claims (17)
-
Specification