我试图在一个应用程序中添加一个像目标一样的覆盖,在一些设备上使用肖像画,在另一些设备上使用风景。我可以手动设置坐标,但无法获得正确的坐标的帧的相机预览。
这是一个SwiftUI应用程序,所以我在UIViewControllerRepresentable中做相机工作。这就是我所拥有的,很明显,当设备和/或方向发生变化时,目标圆总是错误的。我似乎无法捕捉到相机预览存在的模态视图的框架。我会满足于能够指定的框架和位置的相机预览在模态视图。
struct CaptureImageView: View {
@Binding var isShown: Bool
@Binding var i
这是代码:
import cv2
cv2.namedWindow("preview")
vc = cv2.VideoCapture(0)
if vc.isOpened(): # try to get the first frame
rval, frame = vc.read()
else:
rval = False
while rval:
cv2.imshow("preview", frame)
rval, frame = vc.read()
key = cv2.waitKey(20)
if key == 27: # exit on ESC
b
我正在尝试启动网络摄像头并使用python捕获图像--我使用了以下代码
import cv as cv2
cv2.namedWindow("preview")
vc = cv2.VideoCapture(0)
if vc.isOpened(): # try to get the first frame
rval, frame = vc.read()
else:
rval = False
while rval:
cv2.imshow("preview", frame)
rval, frame = vc.read()
k
当我运行raspistill或raspivid时,我得到以下错误
mmal: Cannot read camera info, keeping the defaults for OV5647
mmal: mmal_vc_component_create: failed to create component 'vc.ril.camera' (1:ENOMEM)
mmal: mmal_component_create_core: could not create component 'vc.ril.camera' (1)
mmal: Failed to creat
我正试着用两个相机中的一个来拍照(Surface book 2)首先,我想拍一张照片,然后试着用前置和后置相机拍照我不知道怎么拍照……已尝试使用pygame.camera,但遇到错误
Traceback (most recent call last):
File "C:\Program Files\Python37\lib\site-packages\pygame\_camera_vidcapture.py", line 31, in init
import vidcap as vc
ModuleNotFoundError: No module named '
我在非模式设置中使用UIImagePickerController,如下所示:
UIImagePickerController *_imagePickerVC = // init the VC with the main camera as the source
[_mainCameraPreviewContainer addSubview:_imagePickerVC.view];
[_mainCameraPreviewContainer bringSubviewToFront:_imagePickerVC.view];
这很有效,我可以拍照,但我不能点击预览区域来使相机聚焦在那个点上。我尝