Method and device for calculating and judging object based on picture area and application of method and device

The invention provides a method and a device for calculating and judging an object based on a picture area and application thereof. The method comprises the following steps: S00, establishing a coordinate axis in a camera picture; s10, taking the coordinate point through which the target object passes as a starting point, and connecting the fixed points when the target object completely enters the first quadrant of the coordinate axis to form a parabola; s20, calculating a shape area representing the target object between the parabola and the coordinate axis to obtain an expected value, and taking the expected value as an expected value of the target object; wherein through function definite integral operation on the parabola, a value between the parabola and a coordinate axis is defined as an object to be marked; and S30, marking the object in the error range according with the target object expected value as the target object. The method can realize automatic labeling, and is suitable for identification of