numpy数组显示与pyglet不正确 [英] numpy array is shown incorrect with pyglet

问题描述

我在用pyglet显示numpy数组时遇到问题.我发现了一个非常相似的主题(如何使用pyglet显示numpy数组?).我想以灰度显示数组，但是pyglet用彩色显示它，请参见图像: http://i.stack.imgur.com/pL6Yr.jpg

I have problems with displaying a numpy array with pyglet. I have found a very similar topic (how to display a numpy array with pyglet?) that I used. I want to display the array in greyscale, but pyglet displays it with colours see the image: http://i.stack.imgur.com/pL6Yr.jpg

def create(self, X,Y):

    IMG = random((X,Y)) * 255
    self.IMG = dstack((IMG,IMG,IMG))

    return self.IMG

def image(self):

    self.img_data = self.create(X,Y).data.__str__()
    self.image = pyglet.image.ImageData(X,Y, 'RGB', self.img_data, pitch = -X*3)

    return self.image

如果我保存并加载数组，它可以工作(但速度慢得多):

If I save and load the array instead it works (but it is horrobly slower):

def image(self):

    self.im_save=scipy.misc.toimage(self.create(X,Y),cmin=0, cmax=255)
    self.im_save.save('outfile.png')
    self.image = pyglet.image.load('outfile.png')

    return self.image

然后我得到了想要的东西:

And I get what I wanted:

i.stack.imgur.com/FCY1v.jpg

i.stack.imgur.com/FCY1v.jpg

在第一个代码示例中我找不到错误:(

I can't find the mistake in the first code example :(

非常感谢您的回答.有了Bago的提示，我就可以开始编写代码了:)实际上，nfirvine的建议是合理的，因为我只想以灰度显示矩阵.

Many thanks for your answers. With the hint from Bago I got this to code to work :) And indeed nfirvine suggestion is reasonable, since I only want to display the matrix in greyscale.

def create(self, X,Y):

        self.IMG = (random((X,Y)) * 255).astype('uint8')

        return self.IMG


def image(self):

        self.img_data = self.create(X,Y).data.__str__()
        self.image = pyglet.image.ImageData(X,Y, 'L', self.img_data)

        return self.image

推荐答案

我认为pyglet期望使用uint8，您尝试过吗?

I think pyglet is expecting uint8, have you tried?

IMG = ( random((X,Y)) * 255 ).astype('uint8')

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