function kj1_KeyPressFcn(hObject, eventdata, handles)
hm=uicontrol(gcf,'style','popupmenu',...
    'string','上下翻转|左右翻转|任意角度翻转',...
    'position',[250 20 50 20],'KeyPressFcn');
set(hm,'value',1)
v=get(hm,'string');
switch v,
        case 1
        axes(handles.axes2);
        x=(handles.img)
        if isrgb(handles.img)
            for k=1:3
......................