JAI Progressive Scan Shutter Cameras, TM-6760 operation manual Bayer Color Filter Array CFA

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TM-6760 Series Progressive Scan Shutter Cameras

images acquired at very high shutter speeds. The electronic shutter, which has speeds to 1/16,000 sec., can be reset asynchronously by external pulse control. Uniform square pixels provide superior image definition in any orientation. On-chip micro lenses mean increased sensitivity.

3.11.1 Color Filter Array

JAI, Inc. AccuPiXEL cameras use Bayer CFA (color filter array) as their standard primary color filter. This filter provides the most popular color interpolation supported by numerous software suppliers.

The digital format, either Camera Link or RS-644, allows the camera to output accurate pixel data, including the color information. When the data is stored in the frame buffer of a framegrabber or computer, the color information is easily manipulated to restore the original color images. Because the color filter array contains only a single R, G or B color in each pixel, the restored image has to fill in colors in the missing pixel locations. The software uses neighboring pixel information to “guess” the missing colors to make smooth, clear images. This is called “Color Interpolation.” Today's high-speed computers allow such color interpolation to be done almost in real time. Because these cameras do not contain internal color-processing circuitry, they are smaller and less expensive than full-function color cameras.

3.11.2 Bayer Color Filter Array (CFA)

The Bayer CFA is an R, G, B primary color filter array. This is the most widely accepted CFA for the single-chip CCD progressive scan format. This type of array layout has a specific order for each color’s pixels. Since the human eye’s resolution and color recognition are highest at green, the CFA contains two greens per each red and blue.

It is critical for the framegrabber and color interpolation to know where the individual color pixels exist relative to sync (LDV and FDV) timing.

FIGURE 9. Bayer Color Filter Array

Quantum Efficiency (%)

25%

G

20%

R

B

15%

10%

5%

0%

400

450

500

550

600

650

700

750

800

850

900

950

1000

Wavelength (nm)

Operation

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Contents TM-6760 Series Progressive Scan Shutter Cameras Page CE Compliance CertificationsJAI, Inc Table of Contents Appendix List of Figures List of FiguresList of Figures List of Tables List of TablesList of Tables Introduction Product DescriptionTM-6760 Series Progressive Scan Shutter Cameras Features TM-6760 Series Progressive Scan Shutter CamerasIntroduction Output Functional OptionsAsynchronous image capturing IntegrationTM-6760 System Configuration System ConfigurationAccessories and Options InstallationGetting Started Unpacking InstructionsCamera Setup Connector Pin ConfigurationsHeat Dissipation Pin # Description Digital Output Connector TM-6760 onlyConnector Pinout Configurations 10226-6212 VCa Camera Link ConnectorShutter Speed Control Dial TM-6760 only Analog Output Connector4 RS-232 Communication Cable TM-6760 only Shutter Speed Control DialPinout Configuration for Digital Output Cable Power Supplies Power Supplies and Power Cable SetupAttaching the Analog Video Output JAI, Inc. Power CablesInstallation Camera Rear Panel TM-6760, Lvds model only OperationMode Selection Switch Digital Output Connector Camera Link Connector Power and External Sync ConnectorCamera Rear Panel TM-6760CL Electronic Shutter Progressive ScanningAsynchronous Reset External Vinit With Pulse Width No-Delay ShutterIntegration Pulse Width Async Shutter Timing Internal Shutter Speed ControlProgrammable Look-Up Table LUT and Knee Control Dynamic Range ControlProgrammable LUT and Knee Control patent pending Scan Modes External Sync and Pixel LockingBayer Color Filter TMC-6760 and TMC-6760CL Bayer Color Filter Array CFA Color Filter ArraySync and Data Starting Pixel ConfigurationSync and Data Camera FunctionsMode Switch Up/Down Switch Functions Basic Mode Selections For Non-CL VersionsaColor Interpolation Framegrabber Interpolation Software ListManufacturer Framegrabber Software LDV Camera Timing ChartsOperation Mode Full Image Model TM-6760 242 H, 7.685 ms 17 H, 0.540 ms Serial Communication Kit CS-232C not required for CL version Problems and Solutions TroubleshootingSymptom No Video Symptom Dark VideoInformation and Support Resources TM-6760 Series Product Specifications Table SpecificationsAppendix Model TM-6760 SeriesOptional Functions Physical Dimensions TM-6760, TMC-6760 Spectral Response W . j a i . c o m
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