matplotlib.widgets滑块仍然没有响应

如何解决matplotlib.widgets滑块仍然没有响应

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matplotlib.widgets滑块在我的代码中仍然无响应，即。滑块将不会移动，并且图像也不会更新。 Slider应该通过伽玛校正来更改图像的对比度，因此应该写为def Adjust_gamma，它返回具有更新的像素值的数组。

def adjust_gamma(image,gamma):
        
        table=np.array([((i / 255.0)**gamma)*255 for i in np.arange(0,255)]).astype("uint8")
             
        return cv2.LUT(image,table)

class save:
    def __init__(self,Path,file_type):
        filepaths=[]
    
        for (dirpath,dirnames,filenames) in os.walk(Path):
            for file in filenames:
                if file.endswith(file_type):
                    filepaths.append(os.path.join(dirpath,file))
     
        print('Enter two image numbers: ')
        x=input()
        temp = re.findall('\d+',x) 
        res = list(map(int,temp)) 
        
        filepaths_2=[]
        for i in res:
            filepaths_2.append(filepaths[i])
            
        self.filepaths_2=filepaths_2
            
    
    def imgs_gamma(self,gmin=0.1,gmax=2,stepsize=0.2):
        
        
        img0=cv2.imread(self.filepaths_2[0])
        img1=cv2.imread(self.filepaths_2[1])
        
        
        
        fig,ax=plt.subplots(1,2)
        im0=ax[0].imshow(img0)
        plt.axis([0,64,0])
        
        im0=ax[1].imshow(img1)
        
        axSlider1=plt.axes([0.1,0.1,0.8,0.05])
        slder1= Slider(ax=axSlider1,label='Slider 1',valmin=gmin,valmax=gmax,valstep=stepsize)
        
        def update(val):
            im0.set_data(adjust_gamma(im0,val))
            fig.canvas.draw_idle()
            #im0.axes.figure.canvas.draw()


        slder1.on_changed(update)
        
        plt.show()