USB 2.0 USB 3.x GigE |
USB 2.0 USB 3.x GigE |
Syntax
INT is_Gamma(HIDS hCam, UINT nCommand, void* pParam, UINT cbSizeOfParam)
Description
is_Gamma() enables digital gamma correction which applies a gamma characteristic to the image. When hardware color conversion is used on USB 3 uEye CP/LE/ML cameras the gamma correction is performed in the camera hardware as well. When the color conversion is performed in the PC (software conversion) the gamma correction is performed in software.
When the color format is set to Raw Bayer the gamma correction can not be used. |
Typical values for gamma range between 1.6 and 2.2. |
The nCommand input parameter is used to select the function mode. The pParam input parameter depends on the selected function mode. If you select functions for setting or returning a value, pParam contains a pointer to a variable of the UINT type. The size of the memory area to which pParam refers is specified in the cbSizeOfParam input parameter.
Input parameters
hCam |
Camera handle |
pParam |
Pointer to a function parameter, whose function depends on nCommand. |
cbSizeOfParam |
Size (in bytes) of the memory area to which pParam refers. |
Return values
IS_INVALID_PARAMETER |
One of the submitted parameters is outside the valid range or is not supported for this sensor or is not available in this mode. |
IS_NO_SUCCESS |
General error message |
IS_NOT_SUPPORTED |
The camera model used here does not support this function or setting. |
IS_SUCCESS |
Function executed successfully |
Related functions
/* set gamma value to 1.6 */
INT nGamma = 160;
INT nRet = is_Gamma(hCam, IS_GAMMA_CMD_SET, (void*) &nGamma, sizeof(nGamma));
/* set gamma to default value */
INT nGamma;
INT nRet = is_Gamma(hCam, IS_GAMMA_CMD_GET_DEFAULT, (void*)&nGamma, sizeof(nGamma));
if (nRet == IS_SUCCESS)
{
is_Gamma(hCam, IS_GAMMA_CMD_SET, (void*)&nGamma, sizeof(nGamma));
}
/* read gamma value to nGamma */
INT nGamma;
INT nRet = is_Gamma(hCam, IS_GAMMA_CMD_GET, (void*) &nGamma, sizeof(nGamma));
See also: •Basics: Characteristics and LUT •Basics: Color filter (Bayer filter) •Programming: is_SetColorConverter() |