# -*- coding: utf-8 -*-
import time
import picamera

camera = picamera.PiCamera()
try:
    camera.start_preview()
    time.sleep(10)
    camera.stop_preview()
finally:
    camera.close()

# -*- coding: utf-8 -*-
import time
import picamera
with picamera.PiCamera() as camera:
    camera.start_preview()
    try:
        for i in range(100):
            camera.brightness = i
            time.sleep(0.2)
    finally:
        camera.stop_preview()

# -*- coding: utf-8 -*-
import picamera

with picamera.PiCamera() as camera:
    camera.resolution = (640, 480)    #视频尺寸 default resolution is 1280x720
    camera.start_preview()
    camera.start_recording('foo.h264')  #文件名字
    camera.wait_recording(20)    #文件大小
    camera.stop_recording()
    camera.stop_preview()

# -*- coding: utf-8 -*-
import time
import picamera
with picamera.PiCamera() as camera:
    camera.resolution = (1280, 720)
    camera.start_preview()
    camera.exposure_compensation = 2
    camera.exposure_mode = 'spotlight'
    camera.meter_mode = 'matrix'
    camera.image_effect = 'gpen'
    # Give the camera some time to adjust to conditions
    time.sleep(2)
    camera.capture('foo.jpg')
    camera.stop_preview()

# -*- coding: utf-8 -*-
import time
import picamera  

with picamera.PiCamera() as camera:
    camera.resolution = (2592, 1944)   #照片尺寸
    camera.start_preview()
    time.sleep(2)
    camera.exif_tags['IFD0.Artist'] = 'Me!'		#作者
    camera.exif_tags['IFD0.Copyright'] = 'Copyright (c) 2013 Me!'	#版权
    camera.capture('foo.jpg')
    camera.stop_preview()

# -*- coding: utf-8 -*-
import time
import picamera

with picamera.PiCamera() as camera:
    camera.resolution = (1280, 720)
    camera.start_preview()
    time.sleep(1)
    for i, filename in enumerate(camera.capture_continuous('image{counter:02d}.jpg')):
    	#capture_continuous()
    	#http://picamera.readthedocs.org/en/release-1.9/api.html#picamera.PiCamera.capture_continuous
        print('Captured image %s' % filename)
        if i == 5:   #(0~i)张
            break
        time.sleep(2)  # per 2seconds
    camera.stop_preview()

# -*- coding: utf-8 -*-
import time
import picamera

with picamera.PiCamera() as camera:
    camera.resolution = (640, 480)
    camera.start_preview()
    start = time.time()
    camera.capture_sequence((	
    #capture_sequence()
    #http://picamera.readthedocs.org/en/release-1.9/api.html#picamera.PiCamera.capture_sequence
        'image%03d.jpg' % i  # %03d--%i
        for i in range(120)
        ), use_video_port=True)
    print('Captured 120 images at %.2ffps' % (120 / (time.time() - start)))
    camera.stop_preview()

# -*- coding: utf-8 -*-
#This example demonstrates capturing an unencoded image in RGB format and producing a numpy array from the image:
import time
import picamera
import picamera.array

with picamera.PiCamera() as camera:
    with picamera.array.PiRGBArray(camera) as stream:
        camera.resolution = (1024, 768)
        camera.start_preview()
        time.sleep(2)
        camera.capture(stream, 'rgb')
        print(stream.array.shape)