Kodak Announce New Bayer Filtering For More Light
Kodak's new sensor approach is based on the "Bayer Pattern," an arrangement of red, green, and blue pixels introduced by Kodak scientist Dr. Bryce Bayer in 1976. The pixels work together with the image sensor to collect light.
Half of the pixels on the sensor collect green light, while the remaining pixels collect red and blue light; software later reconstructs the a full-color signal for each pixel.
Enter Kodak's new high-sensitivity image sensor.
"We're introducing a fourth pixel in addition to red, green, and blue," Kodak's DeLuca commented. "This one is clear, panchromatic, so all wavelengths of light go through and are detected by the pixel. Those panchromatic pixels are more sensitive, because they do not filter out any light [striking the sensor]. We can then use those panchromatic pixels to increase the sensitivity of the sensor, and use the colour pixels to collect the colour information that ends up in the final image."
Light would come from above, and then go through this colour filter to go out, so only the red light or blue light or green light passes," DeLuca says. "And then the remaining light is detected by the pixel structure."
But Kodak is changing the filter. From a manufacturing perspective, it's not a dramatic fix. "All we need to do is to change the configuration in that colour filter layer, leaving the rest of the pixel unchanged," DeLuca says.
Kodak's new image sensor technology has a software component as well. The high-sensitivity sensor, with its new approach to patterns, requires revised software algorithms to generate a full colour image from the raw information coming off the sensor.
"There's additional work that needs to happen to integrate the new algorithms--which will continue to be developed--into the camera," DeLuca says. "We're not changing the fundamental structure of the silicon, which gives us the opportunity to deploy this broadly. This technology has the opportunity to become a new standard."
sourced PC World.com
Half of the pixels on the sensor collect green light, while the remaining pixels collect red and blue light; software later reconstructs the a full-color signal for each pixel.
Enter Kodak's new high-sensitivity image sensor.
"We're introducing a fourth pixel in addition to red, green, and blue," Kodak's DeLuca commented. "This one is clear, panchromatic, so all wavelengths of light go through and are detected by the pixel. Those panchromatic pixels are more sensitive, because they do not filter out any light [striking the sensor]. We can then use those panchromatic pixels to increase the sensitivity of the sensor, and use the colour pixels to collect the colour information that ends up in the final image."
Light would come from above, and then go through this colour filter to go out, so only the red light or blue light or green light passes," DeLuca says. "And then the remaining light is detected by the pixel structure."
But Kodak is changing the filter. From a manufacturing perspective, it's not a dramatic fix. "All we need to do is to change the configuration in that colour filter layer, leaving the rest of the pixel unchanged," DeLuca says.
Kodak's new image sensor technology has a software component as well. The high-sensitivity sensor, with its new approach to patterns, requires revised software algorithms to generate a full colour image from the raw information coming off the sensor.
"There's additional work that needs to happen to integrate the new algorithms--which will continue to be developed--into the camera," DeLuca says. "We're not changing the fundamental structure of the silicon, which gives us the opportunity to deploy this broadly. This technology has the opportunity to become a new standard."
sourced PC World.com
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