我必须在VB中模糊一个选定的矩形？ [英] I have to blur a selected rectangle from an image in VB?

问题描述

我想从图像中检测车牌并模糊该矩形部分。我已经检测到车牌号和模糊，我对所选矩形有问题。

整个图像变得模糊，但我只想选择部分。



我尝试了什么：



i尝试过高斯模糊功能。

i want to detect number plate from an image and blur that rectangle part. i have already detected number plate and for blurring, i have a problem with the selected rectangle.
whole image is getting blurred, but i want only selected part.

What I have tried:

i have tried Gaussian blur function.

推荐答案

看一下这些例子：

使用VB.NET创建高斯模糊 [ ^ ]

Gausian和Alpha Blurring [ ^ ]



两个都使用2个循环，将像素从0更改为图像的宽度/高度：

Take a look at these examples:
Creating a Gaussian Blur with VB.NET[^]
Gausian and Alpha Blurring[^]

Both uses 2 loops, which changes pixels from 0 to Width/Height of Image:

' Loop the rows of the image
For PixelY = 0 To bmp.Width - 1
    ' Loop the cols of the image
    For PixelX = 0 To bmp.Height - 1

所有你需要做的就是模糊车牌占用的像素;）

All what you need to do is to blur pixels occupied by number plate ;)

|----------------------------| <--- image
|                            |
|                            |
|    |--------|              |
|    |--------| <------------------ number plate
|                            |
|                            |
|----------------------------|

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