A detection and noise elimination method for contactless detection of physiological information and physical activity information includes steps of sensing a human body to generate an image by an image sensor capturing a physiological signal from the image tracing a feature point of the human body in the image to generate a physical activity signal and calculating a physical activity information including step count, speed and calories according to the physical activity signal. In particular, the noise elimination method treats the physiological signal cooperated with the physical activity signal to separate a noise from the physiological signal, so as to generate an ideal physiological signal. Therefore, the physiological information is calculated more accurately according to the ideal physiological signal.一種應用於非接觸式生理及身體活動資訊的量測與消除雜訊方法,利用一影像感測器感測一人體部位而產生影像;由此影像中擷取一生理訊號;追蹤影像中該人體部位的一特徵點的座標,以形成一身體活動訊號;並且根據此身體活動訊號可以進行步數、速度或卡路里消耗等身體活動資訊的計算。特別地,本發明的消除雜訊方法將身體活動訊號及生理訊號進行訊號混合處理,以消除生理訊號中的雜訊,藉此產生一理想的生理訊號。根據此理想的生理訊號可以更準確地計算生理資訊。100‧‧‧影像感測器
