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all: removing comments and adding section titles
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‎calibration.ipynb‎

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@@ -51,14 +51,7 @@
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### 2-0. Set Up "
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"practicing using functions from np and cv"
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"### 2-0. practicing using functions from np and cv"
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]
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},
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{
@@ -221,7 +214,7 @@
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"source": [
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"https://www.tutorialspoint.com/how-to-find-patterns-in-a-chessboard-using-opencv-python\n",
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"\n",
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"#### 2-1.1. Additional code blocks for testing since the errors have occurred while executing 2-1"
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"### 2-1.1. Additional code blocks for testing since the errors have occurred while executing 2-1"
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]
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},
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{
@@ -458,7 +451,7 @@
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## 3. calibration "
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"## 3. Calibration "
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]
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},
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{
@@ -538,7 +531,7 @@
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## 4. Correcting Undistortion"
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"## 4. Correcting distortion"
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]
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},
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{

‎calibration.py‎

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@@ -7,13 +7,11 @@
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W = 23
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L = 31
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# prepare object points, like (0,0,0), (1,0,0), (2,0,0) ....,(6,5,0)
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objp = np.zeros((W*L, 3), np.float32)
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objp[:,:2] = np.mgrid[0:L,0:W].T.reshape(-1,2)
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# Arrays to store object points and image points from all the images.
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objpoints = [] # 3d point in real world space
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imgpoints = [] # 2d points in image plane.
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objpoints = []
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imgpoints = []
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imgname = 'camera_calib5.jpg'
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imgpath = f'images/{imgname}'

‎calibration_with_mjpeg.ipynb‎

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@@ -14,69 +14,6 @@
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"- fps: 30fps\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 1,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"True\n",
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"0.2789343940438358 [[459.49627036 0. 462.98078721]\n",
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" [ 0. 425.9391768 332.55095914]\n",
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" [ 0. 0. 1. ]] [[-0.13575777 0.0247265 0.00342986 0.00018729 -0.00074961]] (array([[-0.0740356 ],\n",
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" [ 0.00389051],\n",
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" [ 0.07810778]]),) (array([[-12.03832935],\n",
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" [-13.96143027],\n",
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" [ 20.05135273]]),)\n"
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]
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}
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],
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"source": [
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"import cv2 as cv\n",
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"import numpy as np\n",
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"\n",
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"criteria = (cv.TERM_CRITERIA_EPS + cv.TERM_CRITERIA_MAX_ITER, 30, 0.001)\n",
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"\n",
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"W=23\n",
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"L=31\n",
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"\n",
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"# prepare object points, like (0,0,0), (1,0,0), (2,0,0) ....,(6,5,0)\n",
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"objp = np.zeros((W*L, 3), np.float32)\n",
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"objp[:,:2] = np.mgrid[0:L,0:W].T.reshape(-1,2)\n",
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"\n",
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"# Arrays to store object points and image points from all the images.\n",
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"objpoints = [] # 3d point in real world space\n",
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"imgpoints = [] # 2d points in image plane.\n",
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"\n",
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"# imgpath = 'images/sample.jpg'\n",
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"imgpath = 'images/camera_calib5.jpg'\n",
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"img = cv.imread(imgpath)\n",
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"\n",
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"grayscaledimg = cv.cvtColor(img, cv.COLOR_BGR2GRAY)\n",
59-
"cv.imshow(imgpath, grayscaledimg)\n",
60-
"cv.waitKey(0)\n",
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"ret, corners = cv.findChessboardCorners(grayscaledimg, (L,W), None)\n",
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"print(ret)\n",
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"\n",
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"if ret == True:\n",
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" objpoints.append(objp)\n",
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"\n",
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" corners2 = cv.cornerSubPix(grayscaledimg,corners, (11, 11), (-1, -1), criteria)\n",
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" imgpoints.append(corners2)\n",
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"\n",
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" # Draw and display the corners\n",
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" cv.drawChessboardCorners(img, (L, W), corners2, ret)\n",
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" window_name = imgpath + ' outputimg'\n",
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" cv.imshow(window_name, img)\n",
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" cv.waitKey(0)\n",
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"\n",
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" ret, mtx, dist, rvecs, tvecs = cv.calibrateCamera(objpoints, imgpoints, grayscaledimg.shape[::-1], None, None)\n",
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" print(ret, mtx, dist, rvecs, tvecs)"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},

‎video_recording.ipynb‎

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Original file line numberDiff line numberDiff line change
@@ -1,8 +1,15 @@
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{
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"cells": [
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### Checking cv video registry and VideoCapture methods"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 3,
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"execution_count": null,
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"metadata": {},
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"outputs": [
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{
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"print(availableBackends)\n",
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"\n",
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"cap = cv.VideoCapture(1)\n",
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"print(cap.get(5), cap.get(6))\n",
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"\n",
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"\n"
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"print(cap.get(5), cap.get(6))"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### Video Recording with preview "
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]
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},
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{
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"https://docs.opencv.org/4.x/dd/d43/tutorial_py_video_display.html"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### Setting fps, width and height of the video"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 57,
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"cv.destroyAllWindows()"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"#### Testing output path format"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 26,
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"print(\"OUTPUT PATH: \", outputpath)"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"#### Testing assert statement"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 32,
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## FINAL"
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"## ~~FINAL~~"
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]
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},
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{
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"```"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"#### modifying sys list test"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 13,
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"print(sys.path)\n"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"#### importing cv test"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 14,
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"print(cv.__file__)"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"#### setting gst plugin test"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 7,
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"# export cameraDebug=0\n"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"#### setting cameraDebug variable test"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 8,
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"print(os.environ['cameraDebug'])"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### Camera Recording using Gstreamer"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 2,
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" break"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### + Fixing errors"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 1,

‎video_recording.py‎

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Original file line numberDiff line numberDiff line change
@@ -14,27 +14,14 @@
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camera_name = sys.argv[1]
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gstreamer_str = f"icamerasrc device-name=isx031-{camera_name} ! video/x-raw,format=UYVY,width=1920,height=1080,framerate=30/1 ! videoconvert ! appsink"
17-
# ximagesource"
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# ximagesink: video frame into XWindow local/remote display
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# # gst-launch-1.0: build and run GStreamer pipeline.
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# icamerasrc: option for source file and in this case, it's for icamera, use 'icamersrc'
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# video/x-raw: unstructured and uncompressed raw video data. else: x-ffv, x-h263, x-huffyuv .... etc.
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# # print-fps : ** couldn't find that where the value is printed. -> deleted
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# video convert : one of GstVideo Convert Scale (video convert, video convert scale, video scale)
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# cap = cv.VideoCapture(1) -> [ WARN:[email protected]] global cap_v4l.cpp:913 open VIDEOIO(V4L2:/dev/video1): can't open camera by index
26-
cap = cv.VideoCapture(gstreamer_str, cv.CAP_GSTREAMER)
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18+
cap = cv.VideoCapture(gstreamer_str, cv.CAP_GSTREAMER)
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# cap.set(5, 30.0) # FPS
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# cap.set(3, 1920) # WIDTH
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# cap.set(4, 1080) # HEIGHT
3220
print("FPS: ", cap.get(5))
3321
print(cap.isOpened())
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# https://docs.opencv.org/2.4/modules/highgui/doc/reading_and_writing_images_and_video.html?highlight=get#cv2.VideoCapture.get
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# https://www.geeksforgeeks.org/python-assert-keyword/
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# Define the codec and create VideoWriter object
3825
fourcc = cv.VideoWriter_fourcc(*'mp4v')
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now = datetime.now()

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