Opencv 双目摄像头 转 红蓝3D (python)

买来的便宜板子的红蓝模式是   红青。。。手头又没有红青眼镜。

本着能动手绝不伸手的原则（其实买个眼镜也就10几块钱。）自己搞之。

摄像头显示左右分割

一直觉得左右分割会有个 split 类似的函数，找了很久也没找到。。。

结果发现，就是这么简单，惊喜不惊喜。。。。

import cv2
import numpy as np

cap = cv2.VideoCapture(0)
while(1):
        ret, frame = cap.read()
        frame_new = frame[0:400,0:400]
        frame_2 = frame[400:800,0:400]
        cv2.imshow("capture",frame_new)
        cv2.imshow("capture2",frame_2)
        if cv2.waitKey(1) & 0xFF == ord('q'):
                break
cap.release()
cv2.destroyAllWindows()

最终的代码

实现的原理，就是合并两个摄像头的红，蓝部分，并去掉绿色部分。

摄像头像素太渣，看不出效果。

import cv2
import numpy as np
import usb.core
import usb.backend.libusb1
cap = cv2.VideoCapture(1)
backend = usb.backend.libusb1.get_backend(find_library=lambda x: "/usr/lib/libusb-1.0.so")
 # 
dev = usb.core.find(idVendor=0x18e3, idProduct=0x5031, backend=backend)
dev.ctrl_transfer(0x21,0x01,0x0800,0x0600,[0x50,0xff])
dev.ctrl_transfer(0x21,0x01,0x0f00,0x0600,[0x00,0xf6])
dev.ctrl_transfer(0x21,0x01,0x0800,0x0600,[0x25,0x00])
dev.ctrl_transfer(0x21,0x01,0x0800,0x0600,[0x5f,0xfe])
dev.ctrl_transfer(0x21,0x01,0x0f00,0x0600,[0x00,0x03])
dev.ctrl_transfer(0x21,0x01,0x0f00,0x0600,[0x00,0x02])
dev.ctrl_transfer(0x21,0x01,0x0f00,0x0600,[0x00,0x12])
dev.ctrl_transfer(0x21,0x01,0x0f00,0x0600,[0x00,0x04])
dev.ctrl_transfer(0x21,0x01,0x0800,0x0600,[0x76,0xc3])
dev.ctrl_transfer(0x21,0x01,0x0a00,0x0600,[4,0x00])   

while(1):
        ret, frame = cap.read()
        frame = cv2.resize(frame, (1280, 480), interpolation=cv2.INTER_CUBIC)
        frame_new = frame[0:480,0:640]
        b, g, r = cv2.split(frame_new)
        frame_2 = frame[0:480,640:1280]
        b2, g2, r2 = cv2.split(frame_2)
        zeros = np.zeros(frame_2.shape[:2], dtype = "uint8")
        merged = cv2.merge([b,zeros,r2]) 
        cv2.imshow("br",merged)  
        if cv2.waitKey(1) & 0xFF == ord('q'):
                break
cap.release()
cv2.destroyAllWindows()