如何为VidGear的ScreenGear安装pyscreenshot

Question

当我从 VidGear 运行 ScreenGear API 的示例代码时，它抱怨缺少

pyscreenshot

，尽管我按照 ImportError 消息中的建议使用 pip 安装了它。

代码

screen.py

我从VidGear 的使用示例，最低限度使用中运行了此示例代码。它使用 ScreenGear 从屏幕读取帧：

from vidgear.gears import ScreenGear
import cv2

# open video stream with default parameters
stream = ScreenGear().start()

prev_frame_time = 0
new_frame_time = 0

# loop over
while True:

    # read frames from stream
    frame = stream.read()

    # check for frame if Nonetype
    if frame is None:
        break

    # {do something with the frame here}
    gray = frame
    font = cv2.FONT_HERSHEY_SIMPLEX
    new_frame_time = time.time()

    try:
        fps = round(1 / (new_frame_time-prev_frame_time))
    except:
        fps = 0

    prev_frame_time = new_frame_time
    fps = str(fps)
    cv2.putText(gray, fps, (1, 75), font, 3, (10, 100, 200), 3, cv2.LINE_AA)

    # Show output window
    cv2.imshow("Output Frame", gray)

    # check for 'q' key if pressed
    key = cv2.waitKey(1) & 0xFF
    if key == ord("q"):
        break

# close output window
cv2.destroyAllWindows()

# safely close video stream
stream.stop()

错误

当我从

screen.py

文件运行代码时，出现此错误。

Traceback (most recent call last):
  File "c:\Users\Root\Downloads\Testing\screen.py", line 5, in <module>
    stream = ScreenGear().start()
  File "C:\Users\Root\AppData\Local\Programs\Python\Python310\lib\site-packages\vidgear\gears\screengear.py", line 70, in __init__
    import_dependency_safe("pyscreenshot" if pysct is None else "")
  File "C:\Users\Root\AppData\Local\Programs\Python\Python310\lib\site-packages\vidgear\gears\helper.py", line 193, in import_dependency_safe
    raise ImportError(msg) from None
ImportError: Failed to find required dependency 'pyscreenshot'. Install it with  `pip install pyscreenshot` command.

我尝试过的

然后我尝试按照

pip install pyscreenshot

推荐的方式安装它：

PS C:\Users\Root\Downloads\Testing> pip install pyscreenshot
Requirement already satisfied: pyscreenshot in c:\users\root\appdata\local\programs\python\python310\lib\site-packages (3.0)
Requirement already satisfied: mss in c:\users\root\appdata\local\programs\python\python310\lib\site-packages (from pyscreenshot) (6.1.0)        
Requirement already satisfied: entrypoint2 in c:\users\root\appdata\local\programs\python\python310\lib\site-packages (from pyscreenshot) (0.2.4)
Requirement already satisfied: EasyProcess in c:\users\root\appdata\local\programs\python\python310\lib\site-packages (from pyscreenshot) (0.3)  

当我再次运行

screen.py

时，它仍然显示相同的错误。

问题

如何修复 VidGear 的 ScreenGear 的导入错误（缺少 pyscreenshot）？

Answer 1

我正在编写代码来显示屏幕截图并遇到了同样的问题。我使用“pip install Pillow”，我的问题解决了。

我的代码：

from vidgear.gears import ScreenGear
import cv2
import numpy as np


def show_img(image):
    """
    This function shows the image
    """
    img_to_show = np.array(image)
    cv2.imshow("img", img_to_show)
    cv2.waitKey(0)
    cv2.destroyAllWindows()


stream = ScreenGear().start()
while True:
    frame = stream.read()
    if frame is None:
        break
    show_img(frame)