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如何从QGraphicsScene中获取像素点击或在Qt 5中通过鼠标悬停的RGB值? - How could I get the RGB value from QGraphicsScene of a pixel click or hover by mouse in Qt 5? 繁体
2017年10月16 - I m writing a application. I need to get the position of a image showed in QGraphicsScene, and then get the RGB value of the pixel. How could I do that It seems that I need to rewrite mouse move event

如何从CGImageRef对象获取一个像素的RGB值? - How to get RGB value of a pixel from a CGImageRef object? 繁体
2009年07月08 - I m trying to get an RGB value of a pixel from a CGImageRef object. I know that I need to create a context or something but, how do I do this 我试图从CGImageRef对象中获取一个像素的RGB值。我知道我需要创建一个上下文之类的东西,但是,我该怎么做呢

如何获得QPixmap或QImage pixel - Qt, PyQt的RGB值? - How to get RGB values of QPixmap or QImage pixel - Qt, PyQt 繁体
2012年02月03 - Based on this answer https: stackoverflow.com a , I ve made following code printing values in grabbed region: 基于此答案https: stackoverflow.com a ,我已经在抓取区域中做了以下代码打印值: But pixels are displayed like this: 但

如何从java的R、G、B值中获取rgb像素值? - How to get rgb pixel value from R ,G,B value in java for a BufferedImage 繁体
2012年01月21 - I can get the r,g,b values using the following functions. 我可以用下面的函数得到r,g,b的值。 Now I do some operations in on those values and want to set the rgb values using the following function 现在,我在这些值上执行一些操作,并希

如何读取Python中给定像素的RGB值? - How can I read the RGB value of a given pixel in Python? 繁体
2008年09月26 - If I open an image with , how can I get the RGB values of a pixel assuming I have the coordinates of the pixel 如果我打开一个带有open image.jpg 的图像,我如何能获得一个像素的RGB值,假设我有像素的坐标 Then, how can I do the reverse of t

How to get the RGB values for a pixel on an image on the iphone 繁体
2012年05月07 - http: stackoverflow.com questions how to get the rgb values for a pixel on an image on the iphone Method : Writable Pixel Information I defined constants In my UIImage subclass I declared instance var

如何从UISlider获取RGB颜色值 - How to get RGB color value from UISlider 繁体
2013年07月15 - I have tried this code but not working properly.On value change of UISlider I called this method... 我试过这个代码,但是没有正常工作。我把这个方法叫做UISlider的值变化。 please help if any one have some idea.. 如果有人有什么意见,请提出来。

如何获得鼠标单击画布元素的坐标? - How do I get the coordinates of a mouse click on a canvas element? 繁体
2008年09月11 - What s the simplest way to add a click event handler to a canvas element that will return the x and y coordinates of the click relative to the canvas element 将单击事件处理程序添加到画布元素的最简单方法是什么,该元素将返回单击的x和y坐标 相

从ARKit获取RGB像素缓冲区 - Get RGB pixel buffer from ARKit 繁体
2017年06月07 - I m trying to get a in RGB color space from the Apple s ARKit. In method of I get an instance of . On page Displaying an AR Experience with Metal I found that this pixel buffer is in YCbCr YUV color s

如何在iphone的图像上获取一个像素的RGB值? - How to get the RGB values for a pixel on an image on the iphone 繁体
2008年09月27 - I am writing an iPhone application and need to essentially implement something equivalent to the eyedropper tool in photoshop, where you can touch a point on the image and capture the RGB values for t


 
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