HotPixelCorrect

Description

Enables/disables the hot pixel correction mode. Used in combination with HotPixelLevel.


Syntax

[VB]
objActiveDcam.HotPixelCorrect [= Value]

[C/C++]
HRESULT get_HotPixelCorrect ( bool *pCorrect);
HRESULT put_HotPixelCorrect( bool Correct );

Data Type [VB]

Boolean


Parameters [C/C++]

pCorrect [out,retval]

Pointer to the Boolean that is TRUE if the hot pixel correction is enabled, or FALSE otherwise

Correct [in]

Set to TRUE to enable the hot pixel correction, or set to FALSE to disable it

Return Values

S_OK

Success

E_FAIL

Failure.

Example

This VB example activates the hot pixel correction mode with a 15% threshold:

ActiveDcam1.HotPixelLevel = 15
ActiveDcam1.HotPixelCorrect = True

Remarks

Hot pixels are individual pixels that appear much brighter than the rest of an image. They are assosiated with elements on a camera sensor that have higher than normal rates of charge leakage. Hot pixels are especially noticable in a low-light situation when the shutter and/or gain are set to high values.

The hot pixel correction algorithm is based on the "top hat" technique that treats a pixel intensity as an elevation of a surface. Any pixel that protrudes through the "crown of the hat" which height is defined by a value of HotPixelLevel is considered to be noise and replaced by the mean value under the "brim of the hat". This effectively removes hot pixels from the image.