Functionality; Reduction Of Image Size; Region Of Interest (Roi) - Photon Focus MV1-D4096 Series User Manual

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Functionality

This chapter serves as an overview of the camera conﬁguration modes and explains camera

features. The goal is to describe what can be done with the camera. The setup of the cameras

is explained in later chapters.

With the Photonfocus D4096 camera series there are several possibilities to focus on the

interesting parts of an image, thus reducing the data rate and increasing the frame rate:

•

Region of Interest (see Section 5.1.1)

•

Multiple Region of Interest (MROI) (see Section 5.1.2)

•

Vertical Decimation (see Section 5.1.3)

•

Horizontal and vertical Decimation (see Section 5.1.4)

•

Binning on FPGA (up to 8x8 pixels) (see Section 5.1.5)

•

Binning on Sensor (2x2 pixels) (see Section 5.1.6)

Decimation and sensor binning can't be combined. The other ROI modes can be combined.

Some applications do not need full image resolution. By reducing the image size to a certain

region of interest (ROI), the frame rate can be increased. A region of interest can be almost

any rectangular window and is speciﬁed by its position within the full frame and its width (W)

and height (H).

The ROI width must be a multiple of 64 and the horizontal starting position

(ROI_X) must be a multiple of 8.

The ROI height must be a multiple of 2.

A list of common image dimension and its frame rates is shown in Table 5.1. There is a frame

rate calculator in the support section of the Photonfocus web page www.photonfocus.com. In

the Streaming Mode the images are directly streamed to the camera interface. In the Image

Burst Mode the images are stored in internal memory at a high frame rate and can then be

read out at the streaming velocity later.

Reduction in width also results in a frame rate increase. The increase is not linear but in steps

(see Fig. 5.1).

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