最近入手了个OpenMv,还要感谢二姨家的平台啊。感谢
装IDE这种小事就不说了。说说真正入门的操作吧。对蟒也没啥要求。我也是这样子马上上手的,当然在过程我是学习了蟒蛇的。
装IDE这种小事就不说了。说说真正入门的操作吧。对蟒也没啥要求。我也是这样子马上上手的,当然在过程我是学习了蟒蛇的。
1:绘制矩形
函数说明
image.draw_rectangle(rect_tuple,颜色=白色)
参数
rect_tuple
格式(x,y,w,h)
矩阵的起始坐标,(x,y),
即矩形的左上角坐标
w:
矩形的宽度
h:
矩形的高度
x,y,w,h
均为整数
颜色
颜色,填入灰度值(0-255),
或者 RGB
值(r,g,b)
下面简单画个矩形
样例代码
import sensor, image, time sensor.reset() # Reset and initialize the sensor. sensor.set_pixformat(sensor.RGB565) # Set pixel format to RGB565 (or GRAYSCALE) sensor.set_framesize(sensor.QVGA) # Set frame size to QVGA (320x240) sensor.skip_frames(30) # Wait for settings take effect. clock = time.clock() # Create a clock object to track the FPS. x = 100 y = 100 width = 100 height = 100 rect_tuple = (x, y, width, height) rgb_white = (255, 255, 255) # (r=255, g=255, b=255) -> white color while(True): clock.tick() # Update the FPS clock. img = sensor.snapshot() # Take a picture and return the image. img.draw_string(x, y, "(%d, %d)"%(x, y), color=rgb_white) img.draw_rectangle(rect_tuple, color=rgb_white) print(clock.fps()) # Note: OpenMV Cam runs about half as fast when connected
这就是简单画矩形的图像,想要改变矩形位置就改变的x,y(图像左上角起点)
想要改变矩形面积就改变宽度
,高度
(图像宽&
高)
改变线条颜色就改变 rgb_white
2:绘制十字
函数说明
image.draw_cross(x,y,size = 5,color = White)
参数
X
十字中心的 X
坐标
Y
十字中心的 ÿ
坐标
尺寸
十字的长度
颜色
颜色,填入灰度值(0-255),
或者 RGB
值(r,g,b)
样例代码
import sensor, image, time sensor.reset() # Reset and initialize the sensor. sensor.set_pixformat(sensor.RGB565) # Set pixel format to RGB565 (or GRAYSCALE) sensor.set_framesize(sensor.QVGA) # Set frame size to QVGA (320x240) sensor.skip_frames(30) # Wait for settings take effect. clock = time.clock() # Create a clock object to track the FPS. x = 150 y = 150 size = 20 rgb_white = (255, 255, 255) # (r=255, g=255, b=255) -> white color while(True): clock.tick() # Update the FPS clock. img = sensor.snapshotA() # Take a picture and return the image. img.draw_string(x, y, "(%d, %d)"%(x, y), color=rgb_white) img.draw_cross(x, y, size=size, color=rgb_white) print(clock.fps()) # Note: OpenMV Cam runs about half as fast when connected
学会简单画图,就可以使用 openmv
来做色彩追踪了。
未完待续......下篇用openmv来做色彩追踪