Recent Activities

Based on our Blob-Analysis VA operator we produce several features per found object.
For example is the bounding box pixel precise due to the binary input image.

The center of gravity (COG) is not normalized and requires to be divided by the area to…

Dear Rudde-san,

thank you very much for your answer. I completely understand.

Ryo Saito

This is the first time I use SyncToMax, now I understand better what it does !

As you mention, I have replaced the "pixel replicator" instances by isFirstPixel+Register after a SyncToMax.
The algorithm still works, but the simulation shows the exact…

The reduced bandwidth is related to the selected approach increasing the image size of the thresholded image before sync'ing it back to the image.
I would recommend to sync only the resulting threshold value as single pixel value/image and stretching it…

Attached you can find the design version without dead-lock.
Dead-locks do not get found by the simulation itself.
While the histogram is generated and the "Otsu" result is calculated the image needs to wait in the second RAM Buffer.

Based on our Blob-Analysis VA operator we produce several features per found object.
For example is the bounding box pixel precise due to the binary input image.

The center of gravity (COG) is not normalized and requires to be divided by the area to…

Dear All,

My name is Ryo Saito from LINX Corporation in Japan.
I want to get the result of Blob Analysis with sub pixel but I have no idea. If you have any ideas, could you share it with me?

Ryo Saito

Hi Johannes,

Sorry for the late reply. Actually what was my concern is that ' I need to set the dummy source before starting the image acquisition' , then the applet should function without waiting for that particular camera which has been set to give…

Hello Jayasuriya

first of all I like to inform you about this post: How to acquire images by turns using multi cameras? Maybe you find some answers there. Besides other information you can read the following:
(Quote from Johannes Trein)


In your case…

Hello Jayasuriya

first of all I like to inform you about this post: How to acquire images by turns using multi cameras? Maybe you find some answers there. Besides other information you can read the following:
(Quote from Johannes Trein)


In your case…

I have added an ImageBuffer on the "original image" branch before the last sync operator. It seems to remove the deadlock that was not shown by the simulation.
However, the bandwidth test now drops from 800MB/s to 600MB/s.

Hi All,

I am working with three GV-5260 CP cameras connected to VQ4-GE frame grabber running in triggered mode and sequencing the images captured from these cameras to the DMA of the PC.
Now I need to run the applet by disabling one of the cameras and…

Hi Theo
(Quote from Theo)

The table already assumes a bit width of 64 to get to those values. I need to add more details to the post.

I know the operator does not perform very well. Thank you for the feedback. I will forward it.

Tip: It is difficult to…

Here is the design
Otsu.zip

Hi Pierre

if you use the VisualApplets simulation the program will display the correct image width. So please check the simulation output image width and verify that you are using the same setting for the display size.

Now that you have shown a…

The observed behaviour (no frames) may be caused by a deadlock in the VA design.
If possible attach the VA design here and I will do a review of it.

Hi Johannes,

I managed, after some time and after finding your thread and a short sentence in the documentation that increasing parallelism will not increase bandwidth, to get my applet working with a CoefficientBuffer. However, I did not want to use…

Dear CarmenZ:
Thank you for your reply.
As shown in the attached drawing.There are two defects in the OriginImage, and the coordinate is (779, 237) (884, 123).The processing in Halcon and the result is shown in dstimage.If we want use the operator FFT…

Dear Zhuomuke,
a convulution of an image with a filter in the frequency domain can be performed via multiplication.
In the VisualApplets design "FFtandbandpass.va" this is done correctly. After the image is transformed via FFT to frequency space a…

Dear Zhuomuke,
thank you for your question. The meaning "Foward" as value of Parameter "Transformation Mode" of the operator "FFT" means transformation to frequency space. With value "Inverse" the FFT operator transforms the frequency space to…