brightcons_plg.py 文件源码

def run(self, ips, snap, img, para = None):
        if not ips.imgtype in ('8-bit', 'rgb'):
            mid = (self.arange[0] + self.arange[1])/2 - para['bright']
            length = (self.arange[1] - self.arange[0])/np.tan(para['contrast']/180.0*np.pi)
            ips.range = (mid-length/2, mid+length/2)
            return
        if para == None: para = self.para
        mid = 128-para['bright']
        length = 255/np.tan(para['contrast']/180.0*np.pi)
        print(255/np.tan(para['contrast']/180.0*np.pi)/2)
        print(mid-length/2, mid+length/2)
        img[:] = snap
        if mid-length/2>0:
            np.subtract(img, mid-length/2, out=img, casting='unsafe')
            np.multiply(img, 255.0/length, out=img, casting='unsafe')
        else:
            np.multiply(img, 255.0/length, out=img, casting='unsafe')
            np.subtract(img, (mid-length/2)/length*255, out=img, casting='unsafe')
        img[snap<mid-length/2] = 0
        img[snap>mid+length/2] = 255