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New python script to generate video frames
I have added a new python video that generates the video frames for the zoom in and out video. I am now using a proportional zoom instead of different polynomials and this works perfect. Signed-off-by: Christian Rapp <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| { | ||
| "cells": [ | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": null, | ||
| "metadata": { | ||
| "collapsed": true | ||
| }, | ||
| "outputs": [], | ||
| "source": [ | ||
| "# Zoom values for Video frames\n", | ||
| "\n", | ||
| "This was a test to find a polynomial which generates good zoom values for video frames." | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": 32, | ||
| "metadata": { | ||
| "collapsed": false | ||
| }, | ||
| "outputs": [], | ||
| "source": [ | ||
| "import numpy as np\n", | ||
| "import matplotlib.pyplot as plt\n", | ||
| "import numpy.polynomial.polynomial as poly" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": 33, | ||
| "metadata": { | ||
| "collapsed": false | ||
| }, | ||
| "outputs": [ | ||
| { | ||
| "name": "stdout", | ||
| "output_type": "stream", | ||
| "text": [ | ||
| "250000.0\n" | ||
| ] | ||
| } | ||
| ], | ||
| "source": [ | ||
| "zoom_range = np.arange(1, 1250)\n", | ||
| "x = np.array([1, 10, 100, 250, 500, 750, 1000])\n", | ||
| "y = np.array([1, 2, 10, 100, 500, 30000, 250000])\n", | ||
| "\n", | ||
| "coefs = poly.polyfit(x, y, 6)\n", | ||
| "#print(coefs)\n", | ||
| "print(poly.polyval(1000, coefs))\n", | ||
| "ffit = poly.polyval(zoom_range, coefs)\n", | ||
| "\n", | ||
| "#plt.plot(zoom_range, ffit)\n", | ||
| "#plt.plot(x, y, 'bo')\n", | ||
| "#plt.show()" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": 34, | ||
| "metadata": { | ||
| "collapsed": false | ||
| }, | ||
| "outputs": [], | ||
| "source": [ | ||
| "fig = plt.figure(1)\n", | ||
| "ax_1 = fig.add_subplot(211)\n", | ||
| "ax_1.plot(zoom_range, np.log(zoom_range)**2, 'r', label=\"x^2\")\n", | ||
| "ax_1.set_yscale('log')\n", | ||
| "ax_1.legend()\n", | ||
| "ax_2 = fig.add_subplot(212)\n", | ||
| "ax_2.plot(zoom_range, zoom_range**2 / 20, 'b', label=\"x^3\")\n", | ||
| "ax_2.set_yscale('log')\n", | ||
| "ax_2.legend()\n", | ||
| "plt.show()" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": null, | ||
| "metadata": { | ||
| "collapsed": true | ||
| }, | ||
| "outputs": [], | ||
| "source": [] | ||
| } | ||
| ], | ||
| "metadata": { | ||
| "kernelspec": { | ||
| "display_name": "Python 3", | ||
| "language": "python", | ||
| "name": "python3" | ||
| }, | ||
| "language_info": { | ||
| "codemirror_mode": { | ||
| "name": "ipython", | ||
| "version": 3 | ||
| }, | ||
| "file_extension": ".py", | ||
| "mimetype": "text/x-python", | ||
| "name": "python", | ||
| "nbconvert_exporter": "python", | ||
| "pygments_lexer": "ipython3", | ||
| "version": "3.5.1" | ||
| } | ||
| }, | ||
| "nbformat": 4, | ||
| "nbformat_minor": 0 | ||
| } |
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