IEEE Trans Image Process - Design of interpolation functions for subpixel-accuracy stereo-vision systems.

Tópicos

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Resumo

Traditionally, subpixel interpolation in stereo-vision systems was designed for the block-matching algorithm. During the evaluation of different interpolation strategies, a strong correlation was observed between the type of the stereo algorithm and the subpixel accuracy of the different solutions. Subpixel interpolation should be adapted to each stereo algorithm to achieve maximum accuracy. In consequence, it is more important to propose methodologies for interpolation function generation than specific function shapes. We propose two such methodologies based on data generated by the stereo algorithms. The first proposal uses a histogram to model the environment and applies histogram equalization to an existing solution adapting it to the data. The second proposal employs synthetic images of a known environment and applies function fitting to the resulted data. The resulting function matches the algorithm and the data as best as possible. An extensive evaluation set is used to validate the findings. Both real and synthetic test cases were employed in different scenarios. The test results are consistent and show significant improvements compared with traditional solutions.

Resumo Limpo

tradit subpixel interpol stereovis system design blockmatch algorithm evalu differ interpol strategi strong correl observ type stereo algorithm subpixel accuraci differ solut subpixel interpol adapt stereo algorithm achiev maximum accuraci consequ import propos methodolog interpol function generat specif function shape propos two methodolog base data generat stereo algorithm first propos use histogram model environ appli histogram equal exist solut adapt data second propos employ synthet imag known environ appli function fit result data result function match algorithm data best possibl extens evalu set use valid find real synthet test case employ differ scenario test result consist show signific improv compar tradit solut

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