The size of the tag is an important parameter. But it is a secondary parameter. The key parameter that we are looking at here (and one that is not easy to estimate) is Signal to Noise Ratio (SNR). So, very very briefly: The bigger the tag, the more data we obtain from the tag, the better the position of the estimate will be.
But, the "size of the tag&...
For class matching, Hietanen in  compares several
binary descriptors and SIFT with different detectors, including
a dense grid. SIFT preformed better than other descriptors and
dense grid responds very well.
This result leads us to test dense detector for different
It seems that a dense detector is one that uses a dense grid on which to ...
Lets say you have an input image I with size WxHx3
ROI proposal x0,y0,w0,h0.
When you forward the image through the feature extractor you get a feature map F with size WfxHfXC size.
The relation is a spatial relation
The ROI doesn't affect the number of output channels from the feature map.
The relation is a spatial relation which maps an input ...