Question

我的项目是关于形状检测，我必须检测给定图像中的不同矩形，然后将这些数据导入.qml文件，我已经能够这样做，但问题是输出在控制台中（我使用Spyder）是n个模板（.qml），n是图像中矩形的数量，在我的文件夹中只有一个.qml文件（控制台中的最后一个）

我不知道我的错误在哪里。你会在下面找到我的代码摘录：

    if shape == "rectangle":
        x,y,w,h = cv2.boundingRect(c)
        cv2.rectangle(image,(x,y),(x+w,y+h),(0,255,0),0)
        myfile.write('The cordinations of the rectangle are :\n')
        myfile.write('x : '+str(x)+'\n')
        myfile.write('y : '+str(y)+'\n')
        myfile.write('width : '+str(w)+'\n')
        myfile.write('height : '+str(h)+'\n')
        # Open template file and pass string to 'data'.
        # Will be in QML syntax except with the string.Template replace tags
        # with the format of '$var'. The 'var' MUST correspond to the items
        # that will be calculated (i.e. coordinates, sizes, ids, etc.)
        with open('cordinations.txt', 'r') as my_template:
            data = my_template.read()
            # Print template for visual cue.
            print('Template loaded:')
            print(data)
            # Pass 'data' to string.Template object data_template.
            data_template = string.Template(data)             

            cordinates=[]
            cordinates.append(dict(abscisse=x,ordonee=y,width=w,height=h))
            t=Template("""
        x: $abscisse
        y: $ordonee
        w: $width
        h: $height
        """)
            print "    Rectangle:"
            print("      {")
            for data in cordinates:
                print (t.substitute(data))
                print("      }")

                # Open QML output file and fill its contents by string substitution
            with open("main.qml", 'w') as output_file:
                # Run string.Template substitution on data_template
                # using data from 'values' as source and write to 'output_file'.
                output_file.write('import QtQuick 2.2')
                output_file.write('\nItem')
                output_file.write("  \n{")
                output_file.write("   id:\n")
                output_file.write('   height: '+str(height)+'\n')
                output_file.write('   width: '+str(width)+'\n')
                if shape == 'rectangle':
                    output_file.write('  \n\n  Rectangle')
                    output_file.write("   \n   {")
                    output_file.write('    \n            id:')
                    output_file.write(t.substitute(data))
                    output_file.write("}")
                    output_file.write("\n}")
                output_file.close()
            #    Print QML generated code for visual cue.
            with open('main.qml', 'r') as my_qml:
                qml_code = my_qml.read()
                print('QML code generated:')
                print(qml_code)

    # show the output image
    cv2.imshow("Shapes", image)
    cv2.waitKey(0)

感谢您的时间和帮助

Answer 1

您需要在

中使用'a'（追加）代替'w'（写）

with open("main.qml", 'w') as output_file:

不同模板python中if循环的输出

1 个答案: