bryancatanzaro/damascene

Efficient, High Quality Image Contour Detection

damascene's Issues

CUDA Error: an illegal memory access was encountered build/parabola.cu 88

Hi,

I am trying to reproduce results from the paper related to gPb with GPU. The runtime error I encounter while trying to generate the boundary image is attached in the end.
(1) I am running cuda 7.0. Could that be an issue? Should I roll back to cuda 6.0? In terms of hardware, I tried it on a Quadro K5000.
(2) // copy pixels CUDA_SAFE_CALL( cudaMemcpy2DToArray(cuda_parabola_pixels, 0, 0, devPixels, border_width*sizeof(int), border_width*sizeof(int), border_height*norients, cudaMemcpyDeviceToDevice) ); is the line in the parabola.cu file. As I keep removing these operations, similar errors occur further down in the code.

(3) Is there any expectation for the image used in terms of size as input that is causing the memory to overflow and cause an illegal access?

(4) I followed the build instructions in the README, and added 'm' and 'stdc++' to the linker list in the SConstruct file for Ubuntu 14.04. And then ran the scons command. Is there any additional build step?

Any pointers regarding this would be helpful. Thanks!

$ ./contour ~/Downloads/3096_roi.ppm 
Using cuda device 0: Quadro K5000
Processing: /home/user/Downloads/3096_roi.ppm, output in /home/user/Downloads/3096_roiPb.pgm and /home/user/Downloads/3096_roi.pb

 Eig 9 Tol 0.001000 Texton 1Image found: 481 x 321 pixels
Available 2765070336 bytes on GPU
>+< rgbUtoGrayF | 0.049504 | ms
Convolving
Beginning kmeans with 15 max iterations
    Changes: 172077
    Changes: 115379
    Changes: 52198
    Changes: 40522
    Changes: 27055
    Changes: 24549
    Changes: 23285
    Changes: 20741
    Changes: 19376
    Changes: 17479
    Changes: 15946
    Changes: 15384
    Changes: 15246
    Changes: 15009
    Changes: 14467
    15 iterations until termination
Kmeans completed
>+< texton | 262.094238 | ms
>+< rgbUtoLab3F | 0.931840 | ms
>+< normalizeLab | 0.058752 | ms
>+< mirrorImage | 0.769760 | ms
Beginning Local cues computation
CUDA Error: an illegal memory access was encountered build/parabola.cu 88

ACML problem.

Hello.

I have built the library and while running, the program crashes at the part where
the ACML is first used (when applying sgetrf function).

I used gfortran version and also tried the ifortran.

Did you get error like this?

Empty row of pixels in the top and bottom of the nonmax suppressed gPb

All of the 8 oriented gradient gPb files are fine, but the nonmax suppressed file always has the top most and bottom most rows empty, regardless of the input image. Is this a bug?