[Maixbot] camera & LCD

import sensor, image, time, lcd

lcd.init(freq=15000000)
sensor.reset()                      # Reset and initialize the sensor. It will
                                    # run automatically, call sensor.run(0) to stop
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(time = 2000)     # Wait for settings take effect.
clock = time.clock()                # Create a clock object to track the FPS.

while(True):
    clock.tick()                    # Update the FPS clock.
    img = sensor.snapshot()         # Take a picture and return the image.
    lcd.display(img)                # Display on LCD
    print(clock.fps())              # 1초에 몇장 들어오는지!
                                    # to the IDE. The FPS should increase once disconnected.

4~6line

R 5bit, G6bit, B5bit 사용

QVGA (320 x 240) 프레임사이즈 사용

세팅하는데 걸리는 시간을 기다려주기 위해 2초동안 프레임 스킵.

 

다음은 간단한 lcd, img를 이용한 예제들이다. 

import image, lcd, utime

lcd.init()

img = image.Image(size=(320, 240))
img.draw_circle((100,100,200),color=(255,255,0), fill=True)
lcd.display(img)
# 0, 0위치에 300 width 700 height
img.draw_rectangle((0,0,30,70), color=(0,0,255),fill=True)
lcd.display(img)
img.draw_line((0,0,lcd.width(), lcd.height()), thickness=100, color=(255,0,0))
lcd.display(img)
# lcd.draw_string(0,0,"hello world")

이제 어떤 색깔을 detection하는 코드를 작성해보자. LAB space 툴을 이용하여 parameter값을 알아내면 된다.