自制（或用玩具车改装）一个可前进、左转、后退、右转、自动寻找到固定充电位置和车库的智能电动小车，智能电动小车前面要有明显的中点标志，同时制作一个模拟可供智能电动小车充电的简易充电盒和车库（参见图3），简易充电盒和车库必须有明显的中点标志。智能电动小车的运动过程如图1和图2所示，需要完成小车→充电→入库；小车倒车出库→充电→出发的功能。-Self-made (or modified with a toy car) a forward, turn left, back, right turn, au

Speech Based Watermarking for Digital Images This paper presents a novel scheme of watermarking of digital images for copyright protection and authentication. In this paper we proposed a method of embedding owner’s speech signal. Speech being