Photon Focus DR1-D3360-192-G2-8, User Manual, Page: 29 / 119

5
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.
5.1 Reduction of Image Size
With Photonfocus cameras there are several possibilities to focus on the interesting parts of an
image, thus reducing the data rate and increasing the frame rate. The most commonly used
feature is Region of Interest (ROI).
5.1.1 Region of Interest (ROI)
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 2 in the D-cameras and a multiple of 32 in
DR1 cameras.
The ROI height must be a multiple of 2 in the DR1 cameras.
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.
ROI Dimension D-96 DR1-192
3360 x2496 10.6 fps 21.1 fps
2048 x 2048 12.9 fps 25.7 fps
1920 x 1080 (HD) 24.3 fps 48.4 fps
1280 x 1024 (SXGA) 51 fps 101 fps
1024 x 1024 51 fps 101 fps
3360 x 2048 12.9 fps 25.7 fps
3360 x 1024 25.7 fps 51.1 fps
3360 x 512 50.9 fps 100.6 fps
Table 5.1: Frame rates of different ROI settings (minimal exposure time)
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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