AMC SDK automatic zoom instead of manual

[simonebarattin]

Hello,

I am developing a streaming application in C# and using an AXIS F2135-RE Fisheye Sensor connected to an AXIS F9114 Main Unit. I am trying to apply the dewarping effect to an RTSP stream, and I noticed that to see the actual effects, I have to zoom with the mouse wheel on the video view control after setting the AMC engine as follows:

_amcEngine.DewarpLensProfile = "[0.02122631, 0.01222815, 0.23668515]";
_amcEngine.DewarpTiltOrientation = (int)AMC_TILT_ORIENTATION.AMC_TILT_ORIENTATION_WALL;
_amcEngine.UIMode = "dewarped-view";

What I’m trying to achieve is, as soon as the live stream starts, I would like the feed to zoom in on the center of the view to obtain the dewarped frames without having to manually go to the center of the panel and zoom.

Currently, I have simulated the mouse event so that after the stream starts, it moves automatically to the center of the view and simulates the mouse wheel scroll. However, this method is not very efficient and often does not work.

I would like to understand if it is possible to access some method or set some parameter to automatically set this zoom parameter.

Thank you.

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[vivekatoffice]

Hi @simonebarattin ,
Please check this link which may help you to get the correct lens params from an AXIS F2135-RE Fisheye Sensor connected to an AXIS F9114 Main Unit.

http://{camera_ip}:80/axis-cgi/lensparams/getradialdistortionparams.cgi?schemaversion=1

These value you can try with DewarpLensProfile from AXIS Media Control SDK or AXIS Dewarping SDK

I don't have the setup to verify if [0.02122631, 0.01222815, 0.23668515] are correct values.

[simonebarattin]

Hi @vivekatoffice ,
Thank you for your response. Unfortunately the link you sent doesn't work for me, probably because the sensor is connected to the F9 unit. Do you know how I can extract the lens values from the datasheet?

Also, what I wanted to ask is, is there a way using AMC SDK to zoom in a specific point in the video view without having to manually scroll with the mouse wheel?

Thank you

[vivekatoffice]

Hi @simonebarattin ,
Unfortunately, it's not possible to start "zoomed in" the way you want. If you want more control over the dewarping you can build a solution with the Dewarping SDK using e.g AMP SDK like it is done in the sample code in the Axis Dewarping SDK.

I will try to find the lens params for AXIS F2135-RE Fisheye Sensor connected to an AXIS F9114 Main Unit.