Re: 'rgb2gray' undefined

[marco atzeri]

On 5/16/2012 11:01 PM, Nathan Armer wrote:
> Yes, that worked, but now I'm getting "imfilter: first input argument must be an 
> image":
>
> octave:1>  im1=imread('01.jpg');
> warning: your version of GraphicsMagick limits images to 16 bits per pixel
> octave:2>  im2=imread('02.jpg');
> octave:3>  uv=estimate_flow_interface(im1,im2);
> error: imfilter: first input argument must be an image
> error: called from:
> error:   C:\Octave3.6.1_gcc4.6.2\share\octave\3.6.1\m\image\imfilter.m at line 6
> 7, column 5
> error:   C:\Octave3.6.1_gcc4.6.2\share\octave\3.6.1\m\flow_code\utils\compute_im
> age_pyramid.m at line 46, column 5
> error:   C:address@hidden
> cal_flow\compute_flow.m at line 93, column 21
> error:   C:\Octave3.6.1_gcc4.6.2\share\octave\3.6.1\m\flow_code\estimate_flow_in
> terface.m at line 90, column 5
> octave:3>
>
> The images are the first and second frames from the MIT test sequence
> "table": 
http://people.csail.mit.edu/celiu/motionAnnotation/database/table.zip

as we I have no clue of "estimate_flow_interface.m" content or of 
flow_code I have no way to help you.

Marco