Beiträge von stewe93

dinvlad I tried the new script, calibrate_screen still fails with the following error:

python3 calibrate_screen.py 
Waiting for shutdown of Hyperion V4L component ...
Traceback (most recent call last):
  File "calibrate_screen.py", line 382, in <module>
    main()
  File "calibrate_screen.py", line 377, in main
    show_leds(mon, cap, leds, crop, args.frame_preview_delay_ms)
  File "calibrate_screen.py", line 297, in show_leds
    cv2.rectangle(img, np.int32((p[0], p[2])), np.int32((p[1], p[3])), (255, 0, 0))
TypeError: Scalar value for argument 'color' is not numeric

I was able to fix this issue with the following changes:

     for p in leds:
-        cv2.rectangle(img, np.int32((p[0], p[2])), np.int32((p[1], p[3])), (255, 0, 0))
+        pt1=(int(p[0]),int(p[2]))
+        pt2=(int(p[1]), int(p[3]))
+        cv2.rectangle(img=img, pt1=pt1, pt2=pt2, color=(255, 0, 0))

     img = img[crop.y : crop.y + crop.h, crop.x : crop.x + crop.w, :]

And the result is almost fine:

dinvlad yes I can confirm the resolution is fine (checked with v4l2), and here is another picture how I tried the calibration yesterday:

dinvlad I restarted the whole process to properly document every step of it in case anyone else interested. Im using a Raspbarry Pi 4:

• Installed Raspios with desktop (https://downloads.raspberrypi.…-raspios-buster-armhf.zip)
• Enabled SSH and configured Wifi by wpa_supplicant file on boot partition
• After first boot, applied updated with sudo apt update && sudo apt upgrade
• Installed Hyperion NG with the deb package (wget https://github.com/hyperion-project/hyperion.ng/releases/download/2.0.0-alpha.9/Hyperion-2.0.0-alpha.9-Linux-armv7l.deb && sudo apt install ./Hyperion-2.0.0-alpha.9-Linux-armv7l.deb)
• After installation, the 4K output to the TV is gone, but its "normal" in this case, you should turn off Platform Capture under capturing hardware on the hyperion web interface (http://YourIp:8090/#conf_grabber)
• sudo reboot via ssh
• Checked out Your repo (git clone https://github.com/dinvlad/HyperVision.git)
• Your suggestion is already insatalled but found the package I installed: sudo apt install libatlas-base-dev to make it work.
• Installed the requirements "by hand" (pip3 install requests opencv-python screeninfo)
• Calibrate camera runs without problem after all of the above
• params.json

{
  "model": "pinhole",
  "dims": [
    1280,
    720
  ],
  "k": [
    [
      766.7134975473682,
      0.0,
      630.6505932315317
    ],
    [
      0.0,
      747.5824606212268,
      344.49610924731536
    ],
    [
      0.0,
      0.0,
      1.0
    ]
  ],
  "d": [
    [
      -0.275645578998617,
      0.19176572537794795,
      0.0021488936528126163,
      -0.0021569609390377853,
      -0.1643065680854339
    ]
  ]
}

• python3 calibrate_screen.py in my case need some fixes, I did figure out the followings:

diff --git a/calibrate_screen.py b/calibrate_screen.py
index 2cf64a1..28e9a74 100755
--- a/calibrate_screen.py
+++ b/calibrate_screen.py
@@ -189,10 +189,10 @@ def get_screen_transforms(blank: np.array, cam: CameraParams, cam_alpha: float):
     corners = np.float32(corners)

     if cam.model == CameraModel.PINHOLE:
-        new_k = cv2.getOptimalNewCameraMatrix(
+        new_k, _ = cv2.getOptimalNewCameraMatrix(
             cam.k,
             cam.d,
-            cam.dims,
+            (cam.dims[0], cam.dims[1]),
             cam_alpha,
         )
         undist_points = cv2.undistortPoints

• At this point I stuck with the following error:

Traceback (most recent call last):
  File "calibrate_screen.py", line 381, in <module>
    main()
  File "calibrate_screen.py", line 373, in main
    vert_led_depth,
  File "calibrate_screen.py", line 257, in calculate_leds
    dp = distort([[[i / leds_top, 0]] for i in range(0, leds_top + 1)])
  File "calibrate_screen.py", line 255, in distort
    return distort_points(cam, np.float32(points), p_t, new_k_inv)
  File "calibrate_screen.py", line 234, in distort_points
    perspective_points, np.zeros(3), np.zeros(3), cam.k, cam.d
cv2.error: OpenCV(4.5.1) /tmp/pip-wheel-qd18ncao/opencv-python/opencv/modules/calib3d/src/calibration.cpp:3563: error: (-215:Assertion failed) npoints >= 0 && (depth == CV_32F || depth == CV_64F) in function 'projectPoints'

• A picture of the enviroment

Python version: 3.7.3

OpenCV version: 4.5.1

Could you please help me out with this? I also tried the fisheye calibration but that failed as well for me.

Hello Folks!

dinvlad I tried your script, the exact process i did is:

- install Raspbian with desktop (https://downloads.raspberrypi.…-raspios-buster-armhf.zip)

- install hyperion ng

- turned off platform capture in hyperion (maybe this should be in the readme) to be able to use the 4k tv for your script (as I know hyperion platform capture and 4k output doesnt work together)

- installed a dependency manually becasue of this error (I cant remember what was it):

~/HyperVision $ python3 calibrate_camera.py
Traceback (most recent call last):
File "calibrate_camera.py", line 8, in <module>
import cv2
File "/home/pi/.local/lib/python3.7/site-packages/cv2/__init__.py", line 5, in <module>
from .cv2 import *
ImportError: libcblas.so.3: cannot open shared object file: No such file or directory

- then I was able to run the camera calibration

- then tried the screen calibration, i get this error:

~/HyperVision $ python3 calibrate_screen.py 
Traceback (most recent call last):
  File "calibrate_screen.py", line 379, in <module>
    main()
  File "calibrate_screen.py", line 357, in main
    crop, new_k_inv, p_t = get_screen_transforms(blank, cam, args.cam_alpha)
  File "calibrate_screen.py", line 196, in get_screen_transforms
    cam_alpha,
SystemError: new style getargs format but argument is not a tuple

I'm not a python magician but tried a few things, and failed with it, so could you help me out?

Python version: 3.7.3

OpenCV version: 4.5.1

The last answer here maybe related to this issue but I'm just guessing: https://stackoverflow.com/ques…tuple-when-using/43656642