Re: [boost] [GIL] kth_channel_view

Subject: Re: [boost] [GIL] kth_channel_view
From: Christian Henning (chhenning_at_[hidden])
Date: 2010-06-23 12:45:41

A good example of using kth_channel_view is this:

    rgb8_image_t img( 100, 100 );
    typedef kth_channel_view_type< 0, const rgb8_view_t>::type view_t;
    view_t first = kth_channel_view<0>( const_view( img ));

Christian

On Wed, Jun 23, 2010 at 12:33 PM,  <fabien.castan_at_[hidden]> wrote:
>
>>> #include <boost/gil/gil_all.hpp>
>>> ...
>>> kernel_1d<float> kernel2(gaussian_1,9,4);
>>> convolve_rows<rgb32f_pixel_t>(kth_channel_view<0>(const_view(img)),kernel2,kth_channel_view<0>(view(img)));
>>> jpeg_write_view("out-convolution2.jpg", view(img));
>>> ...
>>>
>>> This doesn't compile.
>>
>>Does it compile when using view(img) instead of const_view(img)?
>>Please provide a complete minimal code sample displaying your problem.
>>Makes my life easier. ;-)
>
> I'm really sorry, I just notice that it's a stupid mistake from me... I forgot to change the template parameter of the concolve_rows function !
> If I use k_channel_view I manipulate a grayscale image...
>
> kernel_1d<float> kernel2(gaussian_1,9,4);
> convolve_rows<gray32f_pixel_t>(kth_channel_view<0>(const_view(img)),kernel2,kth_channel_view<0>(view(img)));
> jpeg_write_view("out-convolution2.jpg", view(img));
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