QCameraImageProcessingControl

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

Inheritance diagram of PySide2.QtMultimedia.QCameraImageProcessingControl

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.

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__1ProcessingParameter

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
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

parameterProcessingParameter

Return type

object

Returns the image processing parameter value.

See also

setParameter()

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

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()