AR Basics

October 8, 2010 - 8:33am #1

[=&;;;;;;quot]What is Augmented Reality?[/][=&;;;;;;quot] [/][=&;;quot]Augmented reality technology places virtual content in a live camera view of the real world, thus creating an augmented world where virtual and real world elements appear to coexist. A device, such as a mobile phone, acts as the looking glass through which this this augmented world may be viewed.[/][=&;;;;;;quot] What is a trackable? A trackable, also known as a target, is a key element of vision-based AR.

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remove response header

September 17, 2020 - 9:43am #1

Hello guys, im using vws in php, the response header is showing in my cms, i need is to remove this response.

Exemple of the response shown in html :


 GET d41d8cd98f00b204e9800998ecf8427e Thu, 17 Sep 2020 16:34:20 GMT /targets

i think " request->send(); " is responsible, i just don't know how to remove headers.


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cameraDeviceStartCamera not called

August 27, 2020 - 7:41pm #2

I have two cameras, on android, one works, one not work.

the ok log:

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Image Target problem in Vuforia

August 24, 2020 - 10:59am #8

Hi everyone!

I just started learning Vuforio and Unity. 

I want to create an  AR program that points out the sample I am looking for in a room that contains around 2000 samples. 

I have been learning a about Vuforia and I did everything that I saw in videos/documentation. 

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Editing "Image Target Behaviour (Script)" is not possible!

August 6, 2020 - 2:04pm #1

I am using Vuforia Engine for AR development in Unity since 2017. Never have come across this warning. Though it is a warning only but what it does is that it is not allowing to launch Visual Studio when i try to Edit my "Image Target Behaviour (Script)". It says

"Unable to open Packages/com.ptc.vuforia.engine/Vuforia/Plugins/Managed/iOS/Vuforia.UnityExtensions.dll: Check external application preferences."

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Runtime Change VuforiaConfiguration

July 18, 2020 - 8:23pm #2

I'm trying to use the code modify MaxSimultaneousObjectTargets

But I found that the changes only take effect until the Vuforia is initialized

How can I use dynamic adjustment of code


Unity 2018.4 Vuforia8.3.8

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C++ implementation on Ubuntu 16.04

July 7, 2020 - 7:52pm #1

I am trying to build a function (to return the rotation vector and the translation vector of the marker) which can be called by another c++ program.


  • must be able to run on Ubuntu 16.04 (does this matter?)

Can someone guide me as to how I should start? Is this possible with Vuforia? Can I write the program in c++ and somehow make it work on Ubuntu?

I would like some sample app which I can use as a starter for the c++ program. For now, I would like to use the webcam as my camera for detection.

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Invalid file format - API Result Code

June 24, 2020 - 2:27pm #2

When we have this error, "Invalid file format.Only 8 bit gray scale or 24 bit RGB of file type JPG or PNG are allowed."

Is this the "Result Code" we should get from the API --> BadImage / Unprocessable Entity (422) / Image corrupted or format not supported (target POST/PUT response)


Thank you!


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cURL as a replacement for HTTP_Request2

June 19, 2020 - 5:31am #3

Hello, please provaid PHP samples where we can use cURL instead of HTTP_Request2. Most of us cant use HTTP_Request2. Thank you.

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disable extended tracking

June 11, 2020 - 2:34pm #2

Is there any way to disable extended tracking so that a AR objects disappear when physical image target is removed from camera's view?

I am testing Vuforia on Hololens and would like the holograms that are displayed based on image targets to be removed from the view if user looks away from the image target of the image target is covered / removed. The hologram should reappear when user looks at the image target again.



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