True
colour with KODAK TRUESENSE colour filter
Kodak
improves on standard Bayer pattern giving increased photographic speed
Improving an old standard
Conventional colour image sensors are typically designed using the "Bayer
Pattern" which is an arrangement of red, green, and blue (RGB) pixels,
in which half the pixels on the sensor detect green light, with the other
pixels evenly split to detect red and blue light. Software then reconstructs
a full RGB image mathematically after final exposure of the single image
sensor.
Kodak's innovative TRUESENSE
colour filter
At a recent vision trade exhibition, Kodak demonstrated the first integration
of the its TRUESENSE colour filter pattern on a CCD image sensor.
How the TRUESENSE
colour filter pattern works |
|
The TRUESENSE colour-filter pattern builds on the standard
Bayer pattern by adding panchromatic or "clear"
colour pixels (sensitive to all visible wavelengths) to the
RGB pixels on a sensor. |
|
|
|
|
Figure 1: Image capture
using conventional Bayer Pattern |
Figure 2: Image capture
using Kodak TRUESENSE colour filter |
|
|
Because no visible-light wavelengths are excluded,
a black-and-white image is detected with high sensitivity.
This panchromatic information is then combined with the RGB color
information and a final image is generated with increased
brightness.
This technology increases the overall sensitivity of the sensor,
enabling an increase in photographic
speed for improved low-light, high-speed imaging.
|
Adept Electronic Solutions are "The Machine Vision and Imaging
Specialists" and distributor of machine vision products in Australia
and New Zealand. To find out more about any of our products, please
email us at: adept@adept.net.au
or call us at Perth (08) 92425411 / Sydney (02) 99792599 / Melbourne
(03) 95555621 or use our online contact
us page.
|