2.进入通道面板,随便选一个通道,我这里选绿色通道,然后复制一个绿色道副本,并按Ctrl+L适当进行"色阶"调整.
screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt='点击在新窗口查看全图\nCTRL+鼠标滚轮放大或缩小';}" border=0> 
screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt='点击在新窗口查看全图\nCTRL+鼠标滚轮放大或缩小';}" border=0>