Aurora Visio Studio TOP » Program Examples » Fuses

Fuses

目的

The task is to check if there is no gap in the wire between two pins of fuse.

Input

An image containing fuses.

Output

Result of the inspection drawn on the image. If the fuse is undamaged, a green circle is drawn, otherwise the circle is red.

ヒント

To detect a broken wire Blob Analysis technique can be used. Using the SplitRegionIntoBlobs filter you can analyze each fuse separately.

接続のラベル付けについてはこちらを参照ください。

Solution (AVS)

In Workspace Explorer open workspace Examples and in Film strip window select Fuses dataset. Drag the Image channel to the ACQUIRE section.
Add the ThresholdToRegion filter to create a region containing fuses. A background is white, therefore you can set the inMaxValue to 248. Since the PROCESS section should consist of key functionalities of the application, rest of the tools will be placed here.
To split region to several regions corresponding to each fuse, add the SplitRegionIntoBlobs filter and connect it with the ThresholdToRegion filter.
Now you have an array of regions. To check whether the wire is not broken you need to analyze each of them separately. You can accomplish it with an Array mode.
Note that pins and a wire are darker than a material around them, thus the ThresholdToRegion filter can be used again. Add this filter and connect the outImage output of the ReadFilmstrip to it. Also connect the FuseBlobs output to the inRoi.
Add the SplitRegionIntoBlobs filter to check whether the fuse is damaged. If there will be more then one Region on the the outBlobs output it will mean that the fuse is broken into two parts. To check that, right-click on the outBlobs output, select Property Outputs and choose the Count property. Then open the Results Control, mark the checkbox in the outBlobs.Count row and set Limits to 1: After that operation a new Property Outputs will appear. Just click on the outBlobs.Count and select the Status property.
Click twice on the new output and change its name to IsFuseOK.
Add the RegionBoundingCircle filter to create circles around fuses. To be more precise this filter computes circle around region of fuse.
To draw the circles with color corresponding to the result of the inspection, add the DrawCircles_MultiColor.
- Connect its inputs: the inCircles with the outBoundingCircle and the inColorIds with output IsFuseOK of the second SplitRegionIntoBlobs filter.
- Specify the colors of circles by setting the inPalette to red and green.

マクロフィルタメイン

使用したフィルタ

アイコン	名前	説明
	RegionBoundingCircle	Computes the smallest circle enclosing a region.
	SplitRegionIntoBlobs	オブジェクトが互いに接触していない場合に、領域を個々のオブジェクトにセグメント化します。
	DrawCircles_MultiColor	Draws circles on an image with multiple colors.
	ThresholdToRegion	顕著な明るさによって定義できるオブジェクトの領域の抽出。

その他の資料

Blob Analysis - ブロブ分析手法について詳しく説明します。