qimage

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Pass a Qt QImage to a glsl texture sampler

I am writing a rendering engine using Qt and am running into problems with texturing my models I have a very simple shader to test texturing:[详细]

2023-03-28 00:17 分类：问答
Why does this code make the QImage lose its alpha channel?

I\'m trying to understand why the code below changes the QImage in Qt. It\'s not meant to do anything (yet), it\'s just for testing. When I run the code on an image with alpha, the alpha channel is lo[详细]

2023-03-26 13:00 分类：问答
Copying data correctly between Qt Qimage and Boost Multi Array

I want to copy the data from a Qt image into a Boost Multi Array, do some manipulation to the Multi Array and copy the data back to a QImage to display.[详细]

2023-03-24 07:25 分类：问答
Convert IplImage to Qpixmap

How开发者_开发知识库 do we convert IplImage to a QPixmap or QImage? If the only answer is save the Iplimage then load it to the QPixmap, then how do we do that? I just found an interesting piece of[详细]

2023-03-15 00:01 分类：问答
QPixmap fromImage results in Segmentation fault

I\'m at a complete loss here... I\'m trying to convert a QImage to a QPixmap but my program keeps crashing with the following stack trace. What\'s weird is it works fine if the QRectF that I specify[详细]

2023-03-08 23:45 分类：问答
need to compress QImage to send it via IP

i\'m programming an application (in C++/Qt Designer 4.6 and using some librairies like ffmpeg and v4l2) which capture from webcam and i want to send the captured QImage via IP, so i send it into a QTc[详细]

2023-03-05 08:04 分类：问答
QImage in a QGraphics scene

I am quite new to Qt. I am having troubles in inserting a QImag开发者_开发知识库e to a scene. Could somebody please tell me how to add a QImage to a QGraphicsScene?For this you would use a QGraphicsPi[详细]

2023-03-04 20:22 分类：问答
How to use a color LUT in Qt QImage

I have some legacy code that was writing to a NITF file to display some images. In the legacy code, it appears as if there was a LUT being used, and there was a section of code that wrote out a row at[详细]

2023-02-20 22:30 分类：问答
Using QImage with OpenGL

I\'ve very recently picked up Qt and am using it with OpenGL The thing though is that when moving my SDL code to Qt and changing the texture code to use QImage it stops working.[详细]

2023-02-18 11:30 分类：问答
How to convert an OpenCV cv::Mat to QImage

I am wondering how would I convert the OpenCV C++ standard cv::Mat type to QImage. I have been sea开发者_C百科rching around, but have no luck. I have found some code that converts the IPlimage to QIma[详细]

2023-02-12 03:10 分类：问答