def write_frame(client, frame, boundary='1337'):
ret = cv.EncodeImage('.jpeg', cv.fromarray(frame))
image_bytes = bytearray(np.asarray(ret))
client.send("Content-type: image/jpeg\r\n")
client.send("Content-Length: %d\r\n\r\n" % len(image_bytes))
client.send(image_bytes)
client.send("\r\n--" + boundary + "\r\n")
def takePic(self, split):
img = cv.QueryFrame(self.capture)
jpgstring = cv.EncodeImage(".jpg", img).tostring()
# jpgstring = zlib.compress(jpgstring)
jpglen = len(jpgstring)
for i in range(split - 1):
self.splittedStr[i] = jpgstring[jpglen / split * i:jpglen / split *
(i + 1)]
self.splittedStr[split - 1] = jpgstring[jpglen / split * (split - 1):]
cv.WaitKey(30)
self.frames.append(self.splittedStr)
def do_tarfile_save(self, tf):
""" Write images and calibration solution to a tarfile object """
def taradd(name, buf):
s = StringIO.StringIO(buf)
ti = tarfile.TarInfo(name)
ti.size = len(s.buf)
ti.uname = 'calibrator'
ti.mtime = int(time.time())
tf.addfile(tarinfo=ti, fileobj=s)
ims = [("left-%04d.png" % i, im) for i, (_, im) in enumerate(self.db)]
for (name, im) in ims:
taradd(name, cv.EncodeImage(".png", im).tostring())
taradd('ost.txt', self.ost())
def convert_tif_to_png(self, buffer):
if not cv:
msg = """[PILEngine] convert_tif_to_png failed: opencv not imported"""
logger.error(msg)
return buffer
# can not use cv2 here, because ubuntu precise shipped with python-opencv 2.3 which has bug with imencode
# requires 3rd parameter buf which could not be created in python. Could be replaced with these lines:
# img = cv2.imdecode(numpy.fromstring(buffer, dtype='uint16'), -1)
# buffer = cv2.imencode('.png', img)[1].tostring()
mat_data = cv.CreateMatHeader(1, len(buffer), cv.CV_8UC1)
cv.SetData(mat_data, buffer, len(buffer))
img = cv.DecodeImage(mat_data, -1)
buffer = cv.EncodeImage(".png", img).tostring()
mime = self.get_mimetype(buffer)
self.extension = EXTENSION.get(mime, '.jpg')
return buffer
import cv2.cv as cv
import cv2
import socket
if _name_ == "_main_":
udp =socket.socket(soclet.AF_INET,socket.SOCK_DGRAM)
capture =cv.CaptureFromCAM(0)
cv.NamedWindow("ClientCAM",1)
cv.SetCaptureProperty(capture,cv.CV_CAP_PROP_FRAME_WIDTH,320)
cv.SetCaptureProperty(capture,cv.CV_CAP_PROP_FRAME_HEIGHT,240)
while True:
img =cv.QueryFrame(capture)
jpgstring =cv.EncodeImage(".jpeg",img).tostring()
cv.ShowImage("ClientCAM",img)
udp.sendto(jpgstring,("198.168.0.140",#port#))
if cv.WaitKey(10) ==27:
break
cv.DestroyAllWindows()
udp.close()
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import cv2.cv as cv
import cv2
import socket
UBU_HOST_NAME = 'gaubutwo.local'#ラズパイUDP受信ホスト名
UBU_HOST_PORT = 4001 #ラズパイUDP受信ポート番号
if __name__ == "__main__":
udp = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
#cv.NamedWindow("ClientCAM", 1)
capture = cv.CaptureFromCAM(0)#キャプチャに使うカメラの選択
cv.SetCaptureProperty(capture,cv.CV_CAP_PROP_FRAME_WIDTH,320)#キャプチャする画像のサイズ
cv.SetCaptureProperty(capture,cv.CV_CAP_PROP_FRAME_HEIGHT,240)
while True:
img = cv.QueryFrame(capture)#画像のキャプチャ
jpgstring = cv.EncodeImage(".jpeg", img).tostring()#UDPで送る為に画像をstringに変換
cv.ShowImage("ClientCAM", img)
udp.sendto(jpgstring, (UBU_HOST_NAME, UBU_HOST_PORT))#画像の送信
if cv.WaitKey(10) == 27:
break #エスケープキー（だったけ・・・・？）にて終了
cv.DestroyAllWindows()#事後処理
udp.close()
def _takeFrameUSB(self):
frame = cv.QueryFrame(self.capture)
jpgString = cv.EncodeImage(".jpg", frame).tostring()
return jpgString
def takeImage(self):
img = cv.QueryFrame(self.capture)
img = cv.EncodeImage(".jpg", img).tostring()
return img
def _photo_base64(self):
from cv2 import cv
import cv2
import numpy
img = cv.QueryFrame(self._camera)
return base64.b64encode(cv.EncodeImage('.jpg', img).tostring())
