Question

我正在尝试制作一个gui，帮助我根据他们的心情，如生气，悲伤，快乐等来裁剪他们的脸。我的代码看起来工作得很好但是当我裁剪图像时它会保存剩下的图片。我真的不知道我怎么能做到这一点！我的裁剪功能：

    def on_mouse(self, event, x, y, buttons, user_param):
    # Mouse callback that gets called for every mouse event (i.e. moving, clicking, etc.)

    if self.done: # Nothing more to do
        return

    if event == cv2.EVENT_MOUSEMOVE:
        # We want to be able to draw the line-in-progress, so update current mouse position
        self.current = (x, y)
    elif event == cv2.EVENT_LBUTTONDOWN:
        # Left click means adding a point at current position to the list of points
        print("Adding point #%d with position(%d,%d)" % (len(self.points), x, y))
        self.points.append((x, y))
    elif event == cv2.EVENT_RBUTTONDOWN:
        # Right click means we're done
        print("Completing polygon with %d points." % len(self.points))
        self.done = True


def run(self, image):
    # Let's create our working window and set a mouse callback to handle events
    cv2.namedWindow(self.window_name, flags=cv2.WINDOW_AUTOSIZE)
    cv2.imshow(self.window_name, image)
    cv2.waitKey(1)
    cv2.setMouseCallback(self.window_name, self.on_mouse)

    while(not self.done):
        # This is our drawing loop, we just continuously draw new images
        # and show them in the named window
        if (len(self.points) > 0):
            # Draw all the current polygon segments
            cv2.polylines(image, np.array([self.points]), False, FINAL_LINE_COLOR, 1)
            # And  also show what the current segment would look like
            cv2.line(image, self.points[-1], self.current, WORKING_LINE_COLOR)
        # Update the window
        cv2.imshow(self.window_name, image)
        # And wait 50ms before next iteration (this will pump window messages meanwhile)
        if cv2.waitKey(50) == 27: # ESC hit
            self.done = True

    # User finised entering the polygon points, so let's make the final drawing
    # of a filled polygon
    if (len(self.points) > 0):
        cv2.fillPoly(image, np.array([self.points]), FINAL_LINE_COLOR)
    # And show it
    cv2.imshow(self.window_name, image)
    # Waiting for the user to press any key
    cv2.waitKey()

    cv2.destroyWindow(self.window_name)
    return image

I added the whole code here if you need

编辑：当我在开放功能中更改此行时：

fileName = unicode(fileName.toUtf8(), encoding="UTF-8")
img = cv2.imread(fileName)

对此：

im = Image.open(fileName).convert("RGBA")
imArray = numpy.asarray(im)
real_image = imageViewer.run(imArray)

它给我带来了这个错误：连接到pydev调试器（build 162.1967.10）损坏的JPEG数据：数据段的过早结束 Traceback（最近一次调用最后一次）：文件“C：/Users/ASUS/Desktop/cgg/gui/template2.py”，第156行，打开 im = Image.open（fileName）.convert（“RGBA”）文件“C：\ Python27 \ lib \ site-packages \ PIL \ Image.py”，第1956行，处于打开状态 prefix = fp.read（16） AttributeError：'QString'对象没有属性'read'

我按照这个代码行获取文件名

fileName = QtGui.QFileDialog.getOpenFileName(self, "Open File",
            QtCore.QDir.currentPath())
if fileName:
   image = QtGui.QImage(fileName)
   if image.isNull():
      QtGui.QMessageBox.information(self, "Image Viewer",
                    "Cannot load %s." % fileName)
            return

如何在python中将图像裁剪成多边形

0 个答案: