QtMultiMedia 之 CameraImageProcessing

QtMultiMedia 之 CameraImageProcessing

翻译：qyvlik

5.5.1

用来调整与捕获照片相关的设置。

属性文档

• colorFilter : enumeration

• contrast : qreal

• denoisingLevel : qreal

• manualWhiteBalance : qreal

• saturation : qreal

• sharpeningLevel : qreal

• whiteBalanceMode : enumeration

详细描述

CameraImageProcessing provides control over post-processing done by the camera middleware, including white balance adjustments, contrast, saturation, sharpening, and denoising

CameraImageProcessing提供了一些图像处理，包括白平衡，对比度，饱和度，锐化，降噪。

It should not be constructed separately, instead the imageProcessing property of a Camera should be used.

不可创建，只能通过 Camera::imageProcessing 访问。

Camera { id: camera imageProcessing { whiteBalanceMode: Camera.WhiteBalanceTungsten contrast: 0.66 saturation: -0.5 }
}

属性文档

colorFilter : enumeration

This property holds which color filter if any will be applied to image data captured by the camera.

颜色过滤。

Value	Description
CameraImageProcessing.ColorFilterNone	No filter is applied to images.
CameraImageProcessing.ColorFilterGrayscale	A grayscale filter.
CameraImageProcessing.ColorFilterNegative	A negative filter.
CameraImageProcessing.ColorFilterSolarize	A solarize filter.
CameraImageProcessing.ColorFilterSepia	A sepia filter.
CameraImageProcessing.ColorFilterPosterize	A posterize filter.
CameraImageProcessing.ColorFilterWhiteboard	A whiteboard filter.
CameraImageProcessing.ColorFilterBlackboard	A blackboard filter.
CameraImageProcessing.ColorFilterAqua	An aqua filter.
CameraImageProcessing.ColorFilterVendor	The base value for vendor defined filters.

contrast : qreal

Image contrast adjustment. Valid contrast adjustment values range between -1.0 and 1.0, with a default of 0.

图像对比度。有效值是 -1.0 到 1.0，默认值是 0。

denoisingLevel : qreal

Adjustment of denoising applied to image.

Valid denoising level values range between -1.0 for for denoising disabled, 0 for default denoising level and 1.0 for maximum denoising applied.

设置降噪级数。

有效值从 -1.0 到 1.0，默认值为 0。 1.0 为最大降噪级数。

manualWhiteBalance : qreal

The color temperature used when in manual white balance mode (WhiteBalanceManual). The units are Kelvin.

手动白平衡，在 whiteBalanceMode 设置为 WhiteBalanceManual 模式后才可设置。单位为 Kelvin。

saturation : qreal

Image saturation adjustment. Valid saturation adjustment values range between -1.0 and 1.0, the default is 0.

图像保护度。 有效值为 -1.0 到 1.0，默认值为 0。

sharpeningLevel : qreal

Adjustment of sharpening level applied to image.

Valid sharpening level values range between -1.0 for for sharpening disabled, 0 for default sharpening level and 1.0 for maximum sharpening applied.

图像锐化级数。

有效值为 -1.0 到 1.0，默认是为 0，锐化级数最大为 1.0。

whiteBalanceMode : enumeration

Value	Description
WhiteBalanceManual	Manual white balance. In this mode the manual white balance property value is used.
WhiteBalanceAuto	Auto white balance mode.
WhiteBalanceSunlight	Sunlight white balance mode.
WhiteBalanceCloudy	Cloudy white balance mode.
WhiteBalanceShade	Shade white balance mode.
WhiteBalanceTungsten	Tungsten white balance mode.
WhiteBalanceFluorescent	Fluorescent white balance mode.
WhiteBalanceFlash	Flash white balance mode.
WhiteBalanceSunset	Sunset white balance mode.
WhiteBalanceVendor	Vendor defined white balance mode.