Abstract: A rapid color recognition method is provided. In the method, an area for representing a color of the pixel is identified according to the basic color component data of the pixel, and then the color code is outputted according to a predetermined color classification table of the area. In the method, since an isosceles right triangle plane is provided by extending and scaling the regular triangle plane by using one side of the regular triangle plane as a base, wherein the regular triangle plane is provided by normalizing the basic color component data. Therefore, the basic color component data is normalized without division operation, and thus the complexity of the operation of the color recognition is reduced.

Abstract: A rotating pneumatic knee joint structure is disclosed. The structure comprises a twisting connector module and a pneumatic module. The twisting connector module includes a rotating seat, an adjustable upper seat, adjustable screws, two rotating block modules, bearings, side-arch plate and axle, and screws and a plurality are used to lock all the components of the structure. A socket seat mounted at the thigh and a stop block within the rotating seat cause the lower limb connected to the pneumatic module to swing in a circular direction. Though the adjustable screw, and the spring support to hold the rotating block, the sole of the legs can be swing in a left or right direction so as to hold the weight of the user.

Abstract: A knee joint utilizes a shaft to dispose a rotating portion inside a body portion thereby enabling the body portion to rotate with respect to the shaft, the rotating portion being provided with a one-way bearing which enables the rotating portion to return rapidly to original position thereof in counterclockwise direction and utilizes a cushioning device and larger friction to cause the rotating portion to bend slowly in clockwise direction, thereby enabling people with disability to control and operate artificial limbs conveniently and easily.