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picamera [2014/07/23 00:07]
admin 		picamera [2016/12/11 14:19]
admin [Funktions for the Camera Preview:]
Line 1: Line 1:
----- +===== PiCamera=====
-**PiCamera**\\ +
-----+
  
 [[http://picamera.readthedocs.org/en/release-1.4/]]\\ [[http://picamera.readthedocs.org/en/release-1.4/]]\\
  
----- +==== Installation ====
-**Install:**\\+
   $ sudo apt-get update   $ sudo apt-get update
   $ sudo apt-get install python-picamera   $ sudo apt-get install python-picamera
 +
 +==== Example ====
 +
 +  >>> import picamera
 +  >>> camera = picamera.PiCamera()
 +  >>> camera.start_preview()
 +  >>> camera.stop_preview()
  
 ---- ----
-**Funktion for Camera Preview:**\\+====Funktions for the Camera Preview:==== 
 +__brightness__ (0<u<100)\\ 
 +  camera.brightness = u 
 __color effects__ (0 < u < 255 and 0 < v < 255)\\ __color effects__ (0 < u < 255 and 0 < v < 255)\\
 +The default value is //None//\\
   camera.color_effects = (u, v)   camera.color_effects = (u, v)
 + 
  
 __contrast__ (-100 < u < 100) __contrast__ (-100 < u < 100)
Line 26: Line 35:
 __framerate__ __framerate__
  
-__hflip__+__hflip__ (False, True)
   camera.vflip = False   camera.vflip = False
  
Line 37: Line 46:
      
 __preview_alpha__ __preview_alpha__
-  * preview_fullscreen +  camera.preview_alpha = 100 
-  * preview_window +   
-  * rotation +__preview_fullscreen__ (False, True) 
-  * saturation +  camera.preview_fullscreen = True 
-  * vflip +   
-  * led+__preview_window__ (X,Y,width,hight) 
 +  camera.preview_fullscreen = False 
 +  camera.preview_window = (100, 100, 1000, 500) 
 +   
 +__rotation__ (0, 90, 180, 270) 
 +  camera.rotation = 90 
 +   
 +__saturation__ (-100 < u < 100) 
 +  camera.saturation = u 
 +   
 +__vflip__  (False, True) 
 +  camera.vflip = False
  
----- +__exposure__ 
-**Example:**\\+  cam.exposure_mode = 'off' 
 +   
 +__AWB__ 
 +  cam.awb_mode = 'auto'  
  
-  import time 
-  import picamera 
-  with picamera.PiCamera() as camera: 
-    camera.start_preview() 
-    try: 
-        for j in range(100): 
-            camera.preview_fullscreen = False 
-            camera.preview_window = (100-j, 100-j, 1000, 500) 
-            time.sleep(0.2) 
-    finally: 
-        camera.stop_preview() 
  
 ---- ----