主要的功能及实现

选中文件资源管理器中的图片

这个采用tkinter库的filedialog模块很容易实现

    image_path = filedialog.askopenfilename(initialdir=r"..\\", title="select an image whose filename endwiths .jpg/png",filetypes=[ ("JPG", ".jpg"),("PNG", ".png")])

参数一：initialdir是打开文件资源管理器的初始路径，可以不设置

参数二: title是打开的文件资源管理器的最左上方的标题

参数三: filetypes,比如我上面的设置过滤掉了其他非.jpg、.png文件

askopenfilename的返回值就是你选择的文件路径

图像处理

我主要加了图片涂鸦、图片黑白化、图片裁剪这几个功能，具体效果参考最上面的效果图，实现的话算法+业务逻辑很容易

算法算是比较简单的算法，但是业务逻辑和其中不少的坑是只有动手后才能深有体会的，这里贴出这部分的主要代码：

def OnImageGrayClicked(self,event):
    if self.isLoaded == True:
        dlg = wx.MessageDialog(self, u"this Operation cannot be undo", u"Warning", wx.YES_NO)
        value = dlg.ShowModal()
        if value == wx.ID_YES:
            self.setImage(cv2.cvtColor(self.image, cv2.COLOR_BGR2GRAY))
            self.editMenu.Check(ID_IMAGE_GRAY, True)
            self.image_gray.Enable(False)
        else:
            self.editMenu.Check(ID_IMAGE_GRAY, False)
        dlg.Destroy()
    else:
        wx.MessageDialog(self, u"please make sure you have loaded the image successfully", u"Warning", wx.OK).ShowModal()
        self.editMenu.Check(ID_IMAGE_GRAY, False)

def OnImageDrawClicked(self,event):
    if self.isLoaded == True:
        self.canDraw = not self.canDraw
        if self.canDraw == True:
            self.image_draw.SetItemLabel("disabel drawing on the image")
            self.image_cut.Enable(False)
        else:
            self.image_draw.SetItemLabel("enabel drawing on the image")
            self.image_cut.Enable(True)
        pass
    else:
        wx.MessageDialog(self, u"please make sure you have loaded the image successfully", u"Warning", wx.OK).ShowModal()

def OnImageCutClicked(self,event):
    if self.isLoaded == True:
        self.canCut = not self.canCut
        if self.canCut == True:
            self.image_copy = self.image.copy()
            self.image_cut.SetItemLabel("disabel cutting on the image")
            self.image_draw.Enable(False)
        else:
            self.image_cut.SetItemLabel("enabel cutting on the image")
            self.image_draw.Enable(True)
        return
    else:
        wx.MessageDialog(self, u"please make sure you have loaded the image successfully", u"Warning", wx.OK).ShowModal()
def OnSettingsLineWeightClicked(self,event):
    self.lineWeight = wx.GetNumberFromUser(message="input the line_weight(from 1 to 10)",
                                   prompt="lineWeight", caption="drawer settings",
                                   value=self.lineWeight,
                                   parent=self.bmp, max=10, min=1)
    print("SLW")
    pass

去掉opencv自带的窗口，把图片绑定到wxPython框架上来

我感觉这部分是最复杂的，需要两个实例，image = cv2.imread()和bitmap = wx.bitmap(),从而搭起一个从opencv到wxPython的桥梁

这里最核心的代码是

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def setImage(self,img):
    self.image = img
    img_height, img_width = img.shape[:2]
    try:
        image1 = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
    except:
        image1 = cv2.cvtColor(img,cv2.COLOR_GRAY2RGB)
    finally:
        pic = wx.Bitmap.FromBuffer(img_width, img_height, image1)
    # 显示图片在panel上
    self.bmp.SetBitmap(pic)