Hello, everyone.
I want to use the VLIB in my DM642. First, I just use the function "VLIB_nonMaximumSuppressionCanny" for a test, and it work well.
But when I use the function "VLIB_xyGradientsAndMagnitude( imageData, gradX + imageWidth + 1, gradY + imageWidth + 1, gradM + imageWidth + 1, imageWidth, imageHeight);", I find the out put result "gradX, gradY, gradM" are wrong. Some of them are all zero.
I find the same problem in this website:http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/99/t/5803.aspx , I saw the reply"This issue is fixed in the new release. It should be on the website already or in a couple of days." But I got this lib "VLIB2.0" this year, I don't know whether it is new enough. I use a demo and a picture size 128x128 for a test in CCS4 simulator. And it work well. Then I chose the others size as follow: 240x320 512x512 480x640, and they all work well too. But when I use 576x720， its result become wrong.
The video frame captured and display in my program in DM642 is size 576x720. How can I solve my problem? Is there anything or detail I should be care but I miss?
This is my first time discuss problem in this forums, and I have been stuck by this problem for a few days.
I really hope anyone can give me some advice or help me, I will really appreciate it, and thank you very much!!