Hand judging method and judging device

Abstract

The present invention provides a hand judgment method and a judgment device, and an operation device of vehicle-mounted equipment of a motor vehicle, thus a hand of an operator and a steering wheel can be reliably two-valued into white and black to enhance judgment precision of the hand. In the first process, making a luminance column diagram of presumed areas (RC, RL, RR) of the steering wheel (S) when a mark (M1) is covered by the hand (H); in a second process, arranging a threshold value for judging white and black between two peak parts of the luminance column diagram; and in a third process, judging the area with the height larger than the threshold as an area of white. Thus, as the luminance of the hand (H) is larger than that of the steering wheel (S), the steering wheel (S) can be reliably two-valued into black and the hand (H) can be two-valued into a proper threshold of white, the white area can be judged as the hand (H), and judgment precision can be greatly enhanced.

Description

technical field [0001] The present invention relates to a hand judging method and a hand judging device, and an operating device for an on-vehicle device in a motor vehicle using the hand judging device. The hand judging method and the hand judging device are: An image captured by a steering wheel with a plurality of marks is binarized into white and black according to brightness, and the white area is judged to be a hand. Background technique [0002] In the past, there is known a gesture remote control type operation device equipped with the following components: an imaging unit such as a CCD (charge coupled deice: charge coupled device) camera, which reads the position and movement of the driver's hand on the steering wheel; In order to be able to output an operation command to the vehicle-mounted device based on the position and motion of the hand read by the camera unit. [0003] For example, Patent Document 1 below describes the content of outputting an operation comm...

AI Technical Summary

Problems solved by technology

[0008] However, in the case where the hand enters the shadow of the light, or the operator wears dark gloves, for the existing binarized image using a fixed threshold, there is a possibility that the operator's hand and the steering wheel Binarized to black, making it impossible to reliably judge the situation of the shot

In addition, conversely, when direct sunlight shines on the steering wheel and emits white light, there is a problem of binarizing the operator's hand and the steering wheel together with the conventional binarized image using a fixed threshold. white, so that it is impossible to reliably judge the situation of the shot

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