QCameraImageProcessingControl

The QCameraImageProcessingControl class provides an abstract class for controlling image processing parameters, like white balance, contrast, saturation, sharpening and denoising. More…

Detailed Description

The interface name of QCameraImageProcessingControl is org.qt-project.qt.cameraimageprocessingcontrol/5.0 as defined in QCameraImageProcessingControl_iid .

Camera service may choose the parameters of image processing pipeline depending on sensor properties camera settings and capture parameters.

This control allows to modify some parameters of image processing pipeline to achieve desired results.

Parameters with the “Adjustment” suffix, like ContrastAdjustment , SaturationAdjustment etc allows to adjust the parameter values, selected by camera engine, while parameters like Contrast and Saturation overwrites them.

For example setting the SharpeningAdjustment parameter to -0.1 slightly reduces the amount of sharpening applied, while settings the Sharpening parameter to 0 disables sharpening at all.

See also

requestControl() QCamera

class PySide2.QtMultimedia.QCameraImageProcessingControl([parent=None])

param parent:

PySide2.QtCore.QObject

Constructs an image processing control object with parent .

PySide2.QtMultimedia.QCameraImageProcessingControl.ProcessingParameter

Constant	Description
QCameraImageProcessingControl.WhiteBalancePreset	The white balance preset.
QCameraImageProcessingControl.ColorTemperature	Color temperature in K. This value is used when the manual white balance mode is selected.
QCameraImageProcessingControl.Contrast	Image contrast.
QCameraImageProcessingControl.Saturation	Image saturation.
QCameraImageProcessingControl.Brightness	Image brightness.
QCameraImageProcessingControl.Sharpening	Amount of sharpening applied.
QCameraImageProcessingControl.Denoising	Amount of denoising applied.
QCameraImageProcessingControl.ContrastAdjustment	Image contrast adjustment.
QCameraImageProcessingControl.SaturationAdjustment	Image saturation adjustment.
QCameraImageProcessingControl.BrightnessAdjustment	Image brightness adjustment.
QCameraImageProcessingControl.SharpeningAdjustment	Adjustment of sharpening applied.
QCameraImageProcessingControl.DenoisingAdjustment	Adjustment of denoising applied.
QCameraImageProcessingControl.ColorFilter	Image filter applied. Since 5.5
QCameraImageProcessingControl.ExtendedParameter	The base value for platform specific extended parameters.

PySide2.QtMultimedia.QCameraImageProcessingControl.isParameterSupported(arg__1)

Parameters:

arg__1 – ProcessingParameter

Return type:

bool

Returns true if the camera supports adjusting image processing parameter .

Usually the supported setting is static, but some parameters may not be available depending on other camera settings, like presets. In such case the currently supported parameters should be returned.

PySide2.QtMultimedia.QCameraImageProcessingControl.isParameterValueSupported(parameter, value)

Parameters:

• parameter – ProcessingParameter

• value – object

Return type:

bool

Returns true if the camera supports setting the image processing parameter value .

It’s used only for parameters with a limited set of values, like WhiteBalancePreset .

PySide2.QtMultimedia.QCameraImageProcessingControl.parameter(parameter)

Parameters:

parameter – ProcessingParameter

Return type:

object

Returns the image processing parameter value.

See also

setParameter()

PySide2.QtMultimedia.QCameraImageProcessingControl.setParameter(parameter, value)

Parameters:

• parameter – ProcessingParameter

• value – object

Sets the image processing parameter value . Passing the null or invalid QVariant value allows backend to choose the suitable parameter value.

The valid values range depends on the parameter type. For WhiteBalancePreset the value should be one of WhiteBalanceMode values; for Contrast, Saturation, Brightness, Sharpening and Denoising the value should be in [0..1.0] range with invalid QVariant value indicating the default parameter value; for ContrastAdjustment , SaturationAdjustment , BrightnessAdjustment , SharpeningAdjustment and DenoisingAdjustment the value should be in [-1.0..1.0] range with default 0.

See also

parameter()