Posts made by sjchen

由于CS-MIPI-SC132最大支持1280x1080，故修改capture2opencv脚本如下：

import D_mipicamera as Dcam
import time
import cv2 #sudo apt-get install python-opencv

def align_down(size, align):
    return (size & ~((align)-1))

def align_up(size, align):
    return align_down(size + align - 1, align)

if __name__ == "__main__":
    try:
        camera = Dcam.mipi_camera()
        print("Open camera...")
        camera.init_camera()
        while cv2.waitKey(10) != 27:
            frame = camera.capture(encoding = 'i420')
            height = int(align_up(1080, 16))
            width = int(align_up(1280, 32)) #修改了分辨率
            image = frame.as_array.reshape(int(height * 1.5), width)
            image = cv2.cvtColor(image, cv2.COLOR_YUV2BGR_I420)
            cv2.imshow("D-Cam", image)
            # Release memory
            camera.release_buffer(frame)
            del frame
        
        print("Close camera...")
        camera.close_camera()
    except Exception as e:
        print(e)

运行后报错：

@veye_xumm 谢谢回复。我看到里面有一个python 的封装叫“start_yuv_stream”，但是没有demo可参考。能否给一个简单的example说明回调函数func有哪些参数，另外userdata参数具体是什么？我要怎样使用？
谢谢！

树莓派CM4+imx327S MIPI x2，使用如下脚本测试帧率只有13.4FPS，如何提高到30FPS？谢谢

import D_mipicamera as Dcam
import cv2
import time

frame_width = 1920
frame_length = 1080

def align_down(size, align):
    return (size & ~((align)-1))

def align_up(size, align):
    return align_down(size + align - 1, align)

camera_L = Dcam.mipi_camera()
camera_R = Dcam.mipi_camera()
print("Open camera 0...\n")
camera_L.init_camera((0,0,(0,0),(0,0)))
print("Open camera 1...\n")
camera_R.init_camera((1,1,(1,1),(1,1)))

framecnt = 0
starttime = round(time.time() * 1000)

while(True):
    image_L = camera_L.capture(encoding = 'i420')
    image_R = camera_R.capture(encoding = 'i420')
    height = int(align_up(frame_length, 16))
    width = int(align_up(frame_width, 32))
    frame_L = image_L.as_array.reshape(int(height * 1.5), width)
    frame_L = cv2.cvtColor(frame_L, cv2.COLOR_YUV2BGR_I420)
    frame_R = image_R.as_array.reshape(int(height * 1.5), width)
    frame_R = cv2.cvtColor(frame_R, cv2.COLOR_YUV2BGR_I420)
    
    # Release memory
    camera_L.release_buffer(image_L)
    del image_L
    camera_R.release_buffer(image_R)
    del image_R

    framecnt = framecnt+1
    if framecnt == 100:
        break

print("Close camera...")
camera_L.close_camera()
camera_R.close_camera()

endtime = round(time.time() * 1000)

timedelta = endtime - starttime

print("frame rate: %f" %(100/timedelta*1000))

@veye_xumm 谢谢，现在传入(0,0,(0,0),(0,0)) 和 (1,1,(1,1),(1,1)) 就可以了。

@veye_xumm 我理解要传入类似(0,0,(0,0),(0,0))这样的参数对吧，那么sda_pins和scl_pins这两个参数的具体含义是什么（注释没看懂）能否解释一下？谢谢

我将 capture2opencv.py 中 camera.init_camera() 添加参数0或1，即 camera.init_camera(0) 或 camera.init_camera(1)，始终报错："Invalid camera_interface "

@veye_xumm 可以了，谢谢！

你好，我在用树莓派CM4+imx327S MIPI，运行capture2opencv.py的时候会有很多这样的log在终端打印出来：mmal: capture_buffer_callback data len is 3133440，想问一下如何屏蔽 ？谢谢