Cheetah KAC Camera User Manual | Camera Link (CLF) Interface
October 1, 2019
Page
119
of
135
Rev 7.2
5.18.1 Static Pixel Correction
Static defective and hot pixel correction works with predetermined and preloaded
defective and hot pixel maps. During factory final testing, manufacturing engineers run a
program specially designed to identify these defective and hot pixels. The program
creates a map file listing the coordinates (row and column) of every defective pixel.
Engineering downloads the file, called a Defect Pixel Map (DPM), into the camera’s non-
volatile memory.
You can create and upload your own DPM file to meet the uniqueness of your operating
environment or camera use. When Defective Pixel Correction is enabled, the camera will
compare each pixel’s coordinates with entries in the defect map. If a match is found, the
camera will “correct” the defective pixel. When Hot Pixel Correction is enabled, the
camera will compare each pixel’s coordinates with entries in the defect map. If a match is
found, the camera will “correct” the hot pixel. You can display the Defective/Hot Pixel
Map as needed.
5.18.2 Dynamic Pixel Correction
Dynamic pixel correction works without preloaded pixel maps. Instead, the camera
determines which pixels need correction and performs the correction automatically. Static
and Dynamic Defective Pixel Correction and Hot Pixel Correction can be enabled
independently or simultaneously. The dynamic threshold can be set to a value between 0
and 4096 (12-bit). The threshold determines how much a pixel can deviate from
neighboring pixels (either brighter or darker) before the camera considers the pixel
defective and applies correction to it.
5.19 Camera Interface
5.19.1 Temperature Monitor
The camera’s built-in temperature sensor monitors the internal camera temperature. The
sensor monitors on the hottest spot in the camera. The internal camera temperature is
displayed on the Camera Configuration Utility screen and can be queried by the user at
any time (refer to Camera Configuration section).
5.19.2 Exposure Time Monitor
The camera has a built-in exposure time monitor. In any mode of operation (normal, AOI,
and so on), you can query the camera for the current exposure time by issuing a
command (refer to the Exposure Control section). The camera returns the current camera
integration time in units of microseconds.
5.19.3 Frame Time Monitor
In any mode of operation (normal, AOI, and so on), you can query the camera for the
current frame rate by issuing a command (refer to the Exposure Control section). The
