Measuring physiological parameters or vital sign using camera has become popular in recent years. Contact-less monitoring and extraction of vital signs can be important source of information in situations like medical care system and safety control system. This paper presents the implementation of real-time, non-contact method for extraction of vital signs, heart rate in this case. A better face tracking method is used for efficient face detection. This study extends some of the previous works done and have a comparison study with several methods. The developed system used filtering with window over the green channel of the signal and then Converted to frequency domain to analyze the signal to detect heart rate. The developed system achieved high correlation and showed small error while referencing with actual heart signal from ECG. This method delivers better result in better light condition but gives fairly good result on lower light as well.

Submitted by (edna.saturno@ufrpe.br) on 2017-04-11T13:06:26Z No. of bitstreams: 1 Florival Protassio da Silva Filho.pdf: 4158399 bytes, checksum: ac4a23673ccfbed069aa0598ebed5c9d (MD5) / Made available in DSpace on 2017-04-11T13:06:26Z (GMT). No. of bitstreams: 1 Florival Protassio da Silva Filho.pdf: 4158399 bytes, checksum: ac4a23673ccfbed069aa0598ebed5c9d (MD5) Previous issue date: 2009-02-26 / This research aimed to investigate the influence of sheep’s coat color on heat toleranceftorage, intake during the and performance of Santa Inês breed. The experiment was conducted in summer season at the Agreste region of Pernambuco State, Brazil.It was used a split-plot amangement in a complete randomized experimental design for the following response variables: retal temperature, respiration rate, body surface and skyn temperature. These measurements were performed both during the morning and afternoon. Sweating rate was measured in the afternoon. Heat tolerance index of the animals was avaliated weekely in a completel randomized design. Forage intake was estimated. The environment was monitorated daily by a meteorological station installed close to the experimental paddock and the thermal confort index was calculated. White sheeps showed a small superiority their heat tolerance than the others but his performance did not differ from sheep with chestnut and black hair coat colors. / Os objetivos deste trabalho foram verificar a influência da cor do pelame na tolerância ao calor, consumo a pasto e ganho de peso de ovinos da raça Santa Inês de três diferentes cores de pelame (branca, castanha e preta). O experimento foi conduzido de janeiro a março de 2008 na Fazenda Riachão, localizada no município de Sairé, região agreste de Pernambuco. Os parâmetros fisiológicos temperatura retal (TR), frequência respiratória (FR), temperatura de pele (TPL) e temperatura da superfície do pelame (TSP), foram avaliados duas vezes por semana nos períodos da manhã e tarde durante oito semanas em esquema de parcela sub-subdividida. A taxa de sudação foi mensurada à tarde, uma vez a cada semana em esquema de parcela subdividida. O índice de tolerância ao calor dos animais foi avaliado uma vez por semana durante oito semanas com três tratamentos e sete repetições. Estimou-se o consumo a pasto e o ganho de peso foi avaliado por intermédio de pesagens semanais durante todo o período experimental. O ambiente foi monitorado diariamente por intermédio de uma estação meteorológica instalada ao lado do piquete experimental e índices de conforto foram calculados. O delineamento experimental nos três estudos foi inteiramente casualizado. Ovinos brancos apresentaram pequena superioridade na tolerância ao calor que os castanhos e pretos, mas isso não se refletiu no desempenho produtivo dos animais.