PMC:7796058 / 51441-52789 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/7796058","sourcedb":"PMC","sourceid":"7796058","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7796058","text":"Physical Distancing was monitored for each cell using a pre-trained YOLO model for detecting people in that cell. Relative distance was then calculated as follows: The pairwise distance between two people is the distance between the two similar corners of their bounding box. In order to minimize the camera’s vanishing point effect, the distance was then compared to their bounding box diameters. If the distance was less than the longest diameter, it was assumed that the relative distance between those people was violating the Physical Distancing rule. For the following example, the view from a fixed camera was divided into several polygons (geofences). This can result in the creation of separate geofences (indicated by the IndoorGML nodes if they were in the building) from the camera’s viewpoint. The number of people per geofence polygon and the number of times that people were closer than two metres were reported to the IoCT. The following figure (Figure 11) shows a frame of multiple geofences in an outdoor area, the detected people, and the Physical Distancing violations. The video demo of this scene is attached in Supplementary Materials which shows the people count online when they entered or exited the geofences, as well as the physical distancing violations. Outdoor geofences can be connected to the IndoorGML graph nodes.","tracks":[{"project":"LitCovid-PubTator","denotations":[{"id":"375","span":{"begin":93,"end":99},"obj":"Species"},{"id":"376","span":{"begin":198,"end":204},"obj":"Species"},{"id":"377","span":{"begin":506,"end":512},"obj":"Species"},{"id":"378","span":{"begin":821,"end":827},"obj":"Species"},{"id":"379","span":{"begin":878,"end":884},"obj":"Species"},{"id":"380","span":{"begin":1042,"end":1048},"obj":"Species"},{"id":"381","span":{"begin":1174,"end":1180},"obj":"Species"}],"attributes":[{"id":"A375","pred":"tao:has_database_id","subj":"375","obj":"Tax:9606"},{"id":"A376","pred":"tao:has_database_id","subj":"376","obj":"Tax:9606"},{"id":"A377","pred":"tao:has_database_id","subj":"377","obj":"Tax:9606"},{"id":"A378","pred":"tao:has_database_id","subj":"378","obj":"Tax:9606"},{"id":"A379","pred":"tao:has_database_id","subj":"379","obj":"Tax:9606"},{"id":"A380","pred":"tao:has_database_id","subj":"380","obj":"Tax:9606"},{"id":"A381","pred":"tao:has_database_id","subj":"381","obj":"Tax:9606"},{"subj":"375","pred":"source","obj":"LitCovid-PubTator"},{"subj":"376","pred":"source","obj":"LitCovid-PubTator"},{"subj":"377","pred":"source","obj":"LitCovid-PubTator"},{"subj":"378","pred":"source","obj":"LitCovid-PubTator"},{"subj":"379","pred":"source","obj":"LitCovid-PubTator"},{"subj":"380","pred":"source","obj":"LitCovid-PubTator"},{"subj":"381","pred":"source","obj":"LitCovid-PubTator"}],"namespaces":[{"prefix":"Tax","uri":"https://www.ncbi.nlm.nih.gov/taxonomy/"},{"prefix":"MESH","uri":"https://id.nlm.nih.gov/mesh/"},{"prefix":"Gene","uri":"https://www.ncbi.nlm.nih.gov/gene/"},{"prefix":"CVCL","uri":"https://web.expasy.org/cellosaurus/CVCL_"}]},{"project":"LitCovid-sentences","denotations":[{"id":"T365","span":{"begin":0,"end":113},"obj":"Sentence"},{"id":"T366","span":{"begin":114,"end":163},"obj":"Sentence"},{"id":"T367","span":{"begin":164,"end":275},"obj":"Sentence"},{"id":"T368","span":{"begin":276,"end":397},"obj":"Sentence"},{"id":"T369","span":{"begin":398,"end":556},"obj":"Sentence"},{"id":"T370","span":{"begin":557,"end":659},"obj":"Sentence"},{"id":"T371","span":{"begin":660,"end":806},"obj":"Sentence"},{"id":"T372","span":{"begin":807,"end":939},"obj":"Sentence"},{"id":"T373","span":{"begin":940,"end":1089},"obj":"Sentence"},{"id":"T374","span":{"begin":1090,"end":1283},"obj":"Sentence"},{"id":"T375","span":{"begin":1284,"end":1348},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"attributes":[{"subj":"T365","pred":"source","obj":"LitCovid-sentences"},{"subj":"T366","pred":"source","obj":"LitCovid-sentences"},{"subj":"T367","pred":"source","obj":"LitCovid-sentences"},{"subj":"T368","pred":"source","obj":"LitCovid-sentences"},{"subj":"T369","pred":"source","obj":"LitCovid-sentences"},{"subj":"T370","pred":"source","obj":"LitCovid-sentences"},{"subj":"T371","pred":"source","obj":"LitCovid-sentences"},{"subj":"T372","pred":"source","obj":"LitCovid-sentences"},{"subj":"T373","pred":"source","obj":"LitCovid-sentences"},{"subj":"T374","pred":"source","obj":"LitCovid-sentences"},{"subj":"T375","pred":"source","obj":"LitCovid-sentences"}]}],"config":{"attribute types":[{"pred":"source","value type":"selection","values":[{"id":"LitCovid-PubTator","color":"#db93ec","default":true},{"id":"LitCovid-sentences","color":"#93ecc1"}]}]}}