A non-contact method for detecting heart rhythm is disclosed herein. The method for detecting heart rhythm includes extracting a heartbeat signal by sensing a change in the skin color of a person on the transmitting end and a movement of the head by an image sensor. Changes in facial skin color can reflect changes in light source, changes in head position, and changes in facial blood volume. Among them, the facial blood volume will change with the rhythm of the heartbeat. The invention disclosed herein can obtain heartbeat rhythm or heart rhythm by excluding the effects of head movement, light source change, and facial skin activity from the signal of facial skin color change without contact.在此揭露一種非接觸式偵測心律方法，此偵測心律方法包含藉由影像感測器感測傳訊端人員的臉部膚色變化與頭部移動來萃取心跳信號。臉部膚色變化可以反應出光源的變化、頭部位置的改變、及顏面血液量的變化。其中，顏面血液量會隨著心跳的節奏而變化。在此揭露的發明可以在非接觸的前提下，藉由從臉部膚色變化訊號中排除頭部移動、光源變化、與臉部皮膚活動的影響來取得心跳節奏或心律。
