TDA2: tda2 TIDL SSD

user1916368

Part Number: TDA2

Dear TI，

            A strange bug comes， I find that after I run the TIDL demo ， the output detection ROI coordinate is not correct！
            As you see below，I printed the detected rectangle coordinate ，then check the output value of the rectangle coordinate，nearly all of those are not accurate location .
             Is there any constant value needed be substracted from the variable pObjectDateDesc->ypos and pObjectDateDesc->xpos ,even pObjectDateDesc->objHeight and pObjectDateDesc->objWith needed be multiplied a constan coefficient?

          In fact， this page that you answer me is not the right information I want。
           Could you please chech the file "vision_sdk\apps\src\rtos\alg_plugins\objectdetection\objectDrawLink_algPlugin.c" ? In this file, I print the variable pObjectDateDesc->ypos and pObjectDateDesc->xpos ,even pObjectDateDesc->objHeight and pObjectDateDesc->objWith when detecting the vehicle, yet the result rectangle is far from the real vehicle objects in the image.
           Is there any math relation of the results coordinate？

Looking forward to your kind reply, tks dear.

over 7 years ago

0 Praveen Eppa1 over 7 years ago

TI__Genius 17580 points

Hi,

There is no other math required on this Draw link code, the pObjectDateDesc->ypos and pObjectDateDesc->xpos should give the detected object positions.

Are you running TIDL demo as it is without any changes and getting wrong detection's?

Thanks,
Praveen

0 user1916368 over 7 years ago in reply to Praveen Eppa1

Intellectual 560 points

Hi，Praveen
If what you said is true，then I think it maybe the frame number match or synchronization problem. Is there any synchrone mechanism to match every frame's detection result？ I mean that when I saved the current frame's result， it may be running the other frame not the current one. There is a frame synchronization problem？ Is it right？

Thanks，
Chenglin

0 Anuj Gupta over 7 years ago in reply to user1916368

TI__Genius 15985 points

Hi,

There is already a sync link in the usecase before object draw link which will take care of synchronizing of input yuv data and metadata(output of tidl) .

Please 1st check with ti provided model files and check whether are you getting the proper values or not.

Regards,

Anuj

0 user1916368 over 7 years ago in reply to Anuj Gupta

Intellectual 560 points

Hi,

I have changed the origal TIDL configuration file as following:

TIDL Configuration parameters
-----------------------------

inputWidth=768
inputHeight=320
inputFile=inData_OD
inputHDRFile=inHeader_OD
netFileName=tidl_net_jdetNet_ssd.bin
paramFileName=tidl_param_jdetNet_ssd.bin
fps=10 (fps = 30 changed)
threshold=0.3

I guess if the change of fps cause the detected results does not match the response frame？

Is there any bug about printing the detected result ？