[英]How can I convert pixel data in QImage to another format?
I receive an instance of QImage
with arbitrary QImage::Format
. 我收到带有任意
QImage::Format
的QImage
实例。 How can I create another instance of QImage
with a particular QImage::Format
of my choosing so that the actual image data is converted from the arbitrary format to my format? 如何使用选择的特定
QImage::Format
创建另一个QImage
实例,以便将实际图像数据从任意格式转换为我的格式?
Example: 例:
QImage convertFormat(const QImage &inputImage, QImage::format outputFormat)
{
// What comes here?
}
//Usage
QImage converted = convertFormat(mySourceImage, QImage::Format_Grayscale8);
I am looking for a way to do this with existing code in Qt if possible (as opposed to writing my own pixel format conversion routines working on the low level). 我正在寻找一种在可能的情况下使用Qt中现有代码执行此操作的方法(这与编写自己的低级像素格式转换例程相反)。
Why not use convertToFormat ? 为什么不使用convertToFormat呢? It has nearly the same syntax as you requested, though it's a member of
QImage
so you'd only pass in the format. 尽管它是
QImage
的成员,但它的语法几乎与您要求的语法相同,因此您只能传递格式。
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