[Interest] Rendering 3d object on webcam video

[Alex john]

try putting the camera first, then setting the clear colour of your
frame graph to “transparent” ?

Perfect! that worked, many thanks. :)

On Wed, Mar 3, 2021 at 9:44 PM Mike Krus <mike.krus at kdab.com> wrote:
>
> Hi
>
> try putting the camera first, then setting the clear colour of your frame graph to “transparent” ?
>
>
> Mike
>
> > On 3 Mar 2021, at 14:28, Alex john <blackbriar153 at gmail.com> wrote:
> >
> >
> > Hello,
> >
> > I am trying  to overlay a 3d object(.obj file) on top of the video, I could successfully load the .obj file and rendered it by refering to example https://doc.qt.io/qt-5/qt3d-wireframe-example.html, later I changed the code in main.qml by raping Entity from main.qml into Scene3D and tried to get the webcam rendered using QtMultimedia as below.
> >
> > Rectangle{
> >
> > Scene3D{
> >             anchors.fill: parent
> >             focus: true
> >
> >   Entity {
> >                 id: root
> >
> >                 // Render  3d object same code as in https://doc.qt.io/qt-5/qt3d-wireframe-example.html
> >
> >          }
> >
> >
> > }
> >  Camera {
> >             id: camera
> >             imageProcessing.whiteBalanceMode: CameraImageProcessing.WhiteBalanceFlash
> >             exposure {
> >                 exposureCompensation: -1.0
> >                 exposureMode: Camera.ExposurePortrait
> >             }
> >
> >             flash.mode: Camera.FlashRedEyeReduction
> >
> >
> >         }
> >
> >         VideoOutput {
> >             source: camera
> >             anchors.fill: parent
> >             //focus : visible // to receive focus and capture key events when visible
> >         }
> >
> > }
> >
> > However, what happens is either the camera video is seen or the 3d object based on the sequence whichever is last. How can I get the 3D object on top of the video? any clues?
> > _______________________________________________
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> > https://lists.qt-project.org/listinfo/interest
>
> —
> Mike Krus | mike.krus at kdab.com | Senior Software Engineer & Teamlead
> KDAB (UK) Ltd., a KDAB Group company
> Tel: UK Office +44 1625 809908   Mobile +44 7833 491941
> KDAB - The Qt Experts, C++, OpenGL Experts
>
>