Pulnix TMC-4200CL Manual de usuario descargar pdf (Pagina 8)

8JAI Vision News

The new analog 12-bit front-end features:

S/N ratio greater than 58 dB – an improvement of several dB.

Image output is user selectable between 12, 10 or 8-bit (10-bit and 8-bit

with the built-in LUT).

Single-tap and dual-tap operation is software selectable. For dual-tap

output the manual and automatic channel balancing is significantly

improved.

Programmable partial scan.

Blemish compensation.

PIV modes are incorporated.

Resolution Proportional Digital Zoom (RPDZ) Feature

And there are many other new features, such as 2 by 2 binning, adjustable back

focus and full analog output. For further information please see the camera

data sheets and manuals available at www.jai.com

Programmable partial scan

This new functionality is of interest for capturing images of elongated objects.

It allows the user to adjust the starting position and number of lines to capture

- on the fly - making it possible to track an object. At the same time the frame

rate is increased. Sending the partial scan command (position: XXXX, height:

YYYY) to the camera during or just after image capture, the camera will use

these settings for the next capture.

Blemish compensation

With time CCD imagers will begin to show blemishes. A blemish is a pixel

showing a significantly higher or lower value compared to the average pixel

value of all the pixels (see fig.1). For various applications such a blemish can be

mistaken for a surface artifact, contamination or glare and requiring additional

image processing to remove this effect.

The blemish compensation method used in the cameras is based on a near-

est neighbor interpolation and works for monochrome and color sensors

(see fig.2). Since the blemish compensation only concerns pixel positions,

it is independent of all subsequent gain and shutter settings. The function

compensates up to 256 pixel values and is easy to use with the simple built-in

calibration procedure.

•

New features in DUAL-TAP Cameras

new features

Figure 2: blemish interpolation.

Figure 1: Blemish

TM-4200 Series

With the latest update of the TM-4100 dual-tap camera to TM-4200, JAI has now met customer requests

for a 12-bit camera front-end. But there is more to the story... because what seems like a small change

from the outside is in fact a completely new camera with new electronics and a range of

additional functions – and at the same time the TM-4200 is a drop-in replace-

ment for the TM-4100. This new platform is also the basis for the brand new

2 megapixel cameras, TM-2040 and TM-2030. All of these models are avail-

able in monochrome and color versions and can be ordered with Camera

Link or GigE Vision interface.

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