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In order to realize the automation of rebar counting on the production line, this paper analyzes the advantages and the disadvantages of existing solutions. Combining their dominances, this paper presents a new solution. This solution captures the radius of normal rebar according to maximal internal tangent circle algorithm. With the radius, modified gradient Hough circle transform and a series of...
Basic issues in creating practical setups for off-axis digital holography involve having (i) convenient switch of imaging in the transmission and reflection modes, (ii) reduction in stray light reflection, (iii) immunity against environmental noise, and (iv) efficient usage of light output from the laser source. These exigencies are addressed using a free-space setup described here that applies a...
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