word_renderer.py 文件源码

def global_distortions(self, arr):
        # http://scipy-lectures.github.io/advanced/image_processing/#image-filtering
        ds = self.diststate.get_sample()

        blur = ds['blur']
        sharpen = ds['sharpen']
        sharpen_amount = ds['sharpen_amount']
        noise = ds['noise']

        newarr = n.minimum(n.maximum(0, arr + n.random.normal(0, noise, arr.shape)), 255)
        if blur > 0.1:
            newarr = ndimage.gaussian_filter(newarr, blur)
        if sharpen:
            newarr_ = ndimage.gaussian_filter(arr, blur / 2)
            newarr = newarr + sharpen_amount * (newarr - newarr_)

        if ds['resample']:
            sh = newarr.shape[0]
            newarr = resize_image(newarr, newh=ds['resample_height'])
            newarr = resize_image(newarr, newh=sh)

        return newarr