Esto lo encontre por casualidad, buscando algo sobre manejo de hardware con python
usa la libreria
OpenCV (Open Source Computer Vision) from opencv.cv import *
from opencv.highgui import *
cvNamedWindow("w1", CV_WINDOW_AUTOSIZE)
captura = cvCreateCameraCapture(0)
def calcular( image ):
escala = cvCreateImage(cvSize(image.width, image.height), 8, 1)
cvCvtColor(image, escala, CV_BGR2GRAY)
storage = cvCreateMemStorage(0)
cvClearMemStorage(storage)
cvEqualizeHist(escala, escala)
cascade = cvLoadHaarClassifierCascade( 'haarcascade_frontalface_default.xml', cvSize(1,1))
caras = cvHaarDetectObjects(escala, cascade, storage, 1.2, 2, CV_HAAR_DO_CANNY_PRUNING, cvSize(25,25))
ret = []
if caras:
for cara in caras:
vertices_imagen = {}
vertices_imagen['x1'] = cara.x
vertices_imagen['y1'] = cara.y
vertices_imagen['x2'] = cara.x+cara.width
vertices_imagen['y2'] = cara.y+cara.height
ret.append( vertices_imagen )
return ret
def bucle():
global captura
ancho = 160
alto = 120
frame = cvQueryFrame(captura)
imagen = cvCreateMat(alto, ancho,cvGetElemType( frame ))
cvResize(frame, imagen)
vertices = calcular( imagen )
for vertice in vertices:
cvRectangle( imagen, cvPoint( int(vertice['x1']), vertice['y1']), cvPoint(int(vertice['x2']), int(vertice['y2'])), CV_RGB(0, 255, 0), 3, 8, 0)
cvShowImage("w1", imagen)
c = cvWaitKey(2)
while True:
bucle()
dejo link donde lo encontre http://www.retronet.com.ar/?p=474 (http://www.retronet.com.ar/?p=474)