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vladimir kulyukin assistive technology visual impairment blindness mobile computing aliasgar kutiyanawala john nicholson blind navigation accessible shopping computer vision service robotics eyes-free computing chaitanya gharpure rfid rehabilitation engineering nutrition management human-robot interaction assistive robotics blind shopping wearable computing shoptalk smart environments shopmobile assisted navigation tanwir zaman accessible blind shopping blind hri cloud computing robotics minghui jiang daniel coster independent blind shopping android wifi human factors robot-assisted navigation mobile robots smart worlds path inference spatial cognition gps barcode scanning eyes-free barcode scanning collaborative problem solving information extraction landmark extraction verbal route directions low vision james marston computer science eyes-free barcode localization eyes-free barcode decoding ocr text data mining ipcv 2015 information retrieval error correction electronic beehive monitoring signal processing sustainable computing 2d haar wavelet transform shopmoile sarat andhavarapu route information sharing crowdsourcing criss undergraudate university education teleshop teleassitance computability theory of computation junun robots written route directions daniel bryce wavelets blur detection nutrition label verbal route instructions for the blind text skew angle detection geo-referencing nasa tlx geo-referenced maps ramya venugopalan nutrition label scanning rfid surfaces rfid signal distribution immobile robotics big data 1d upc 1d ean ijip mobile nutrition management google nexus one android programming bitstrings hamming distance rfid-based localization similarity metrics generalized hamming distance robot-assisted wayfinding term cooccurence touchscreen gesture interfaces pattern recognition vikas reddy sudini design requirements dietetics vision-based barcode scanning caloric estimation jennifer day cloud-based computing joshua miele svg heidi wengreen large print maps health informatics hims 2015 diet robot-assisted shopping dictap 2013 vladimir kulytukin indoor localizatsion wi-fi outdoor navigation digital compass ergonomics trie robotic shopping cart natural language dialogue natural languge processing robocart servivce robotics sachin pavithran dempster-shafer theory dempster-shafer simple support functions abhishek andhavarapu assisive technology p2p teleassistance remote caregiving skip trie matching support vector machines smartphones eyes-free barcode detection niblack's binarization vision-based nutrition information extraction blind route descriptions stephen clyde finite state automata nutrition label localization nutrion label haptic and locomotor interfaces independent blind travel david ross florence gaunet blind route information sharing accessibility visual impairments wayfinding skewed barcode scanning iwalker skewed barcode localization rollator-mounted wayfinding cognitive robotics spatial ontology cassidy pentico indoor localization intelligent walkers cognitive impairments graph algorithms 1d barcodes rfid-enabled surfaces geometic probability serivice robotics natural language communication with robots narrative maps computational geometry nutrition control greedy algorithms image processing