These are the top rated real world C (Cpp) examples of QImage::scanLine extracted from open source projects.You can rate examples to help us improve the quality of examples.
Qimage Setpixel Format_Indexed8 Code To ConvertI used the following code to convert a depth frame to an OpenCV Mat object: VideoFrameRef depthFrame depthListener.getFrame().I tried the following: QImage dispQDepth new Qimage((uchar)depthDisp.data, depthDisp.size().width, depthDisp.size().height, QImage::FormatIndexed8).
Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license. If you are looking for information about Qt related issue register and post your question. Qimage Setpixel Format_Indexed8 Free Community YouBy joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today If you have any problems with the registration process or your account login, please contact us. Please ask Qt related questions on the forum and not using private messages or visitor messages. ![]() Qt provides four classes for handling image data: QImage, QPixmap, QBitmap and QPicture. QImage is designed and optimized for IO, and for direct pixel access and manipulation, while QPixmap is designed and optimized for showing images on screen. QBitmap is only a convenience class that inherits QPixmap, ensuring a depth of 1. Finally, the QPicture class is a paint device that records and replays QPainter commands. Because QImage is a QPaintDevice subclass, QPainter can be used to draw directly onto images. When using QPainter on a QImage, the painting can be performed in another thread than the current GUI thread. The QImage class supports several image formats described by the Format enum. These include monochrome, 8-bit, 32-bit and alpha-blended images which are available in all versions of Qt 4.x. QImage provides a collection of functions that can be used to obtain a variety of information about the image. There are also several functions that enables transformation of the image. QImage objects can be passed around by value since the QImage class uses implicit data sharing. ![]() QImage also provides the static fromData () function, constructing a QImage from the given data. ![]() Qimage Setpixel Format_Indexed8 How To Embed ImagesSee The Qt Resource System overview for details on how to embed images and other resource files in the applications executable. The complete list of supported file formats are available through the QImageReader::supportedImageFormats () and QImageWriter::supportedImageFormats () functions. The valid () function tells if a given pair of coordinates is within this rectangle. The offset () function returns the number of pixels by which the image is intended to be offset by when positioned relative to other images, which also can be manipulated using the setOffset () function. The pixel () function returns the color as a QRgb value indepedent of the images format. In case of monochrome and 8-bit images, the colorCount () and colorTable () functions provide information about the color components used to store the image data: The colorTable () function returns the images entire color table. To obtain a single entry, use the pixelIndex () function to retrieve the pixel index for a given pair of coordinates, then use the color () function to retrieve the color. Note that if you create an 8-bit image manually, you have to set a valid color table on the image as well. The hasAlphaChannel () function tells if the images format respects the alpha channel, or not. The allGray () and isGrayscale () functions tell whether an images colors are all shades of gray. See also the Pixel Manipulation and Image Transformations sections.
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