crearo

// Simple vertex shader
private static final String VERTEX_SHADER =
        "uniform mat4 uMVPMatrix;\n" +
        "uniform mat4 uTexMatrix;\n" +
        "attribute vec4 aPosition;\n" +
        "attribute vec4 aTextureCoord;\n" +
        "varying vec2 vTextureCoord;\n" +
        "void main() {\n" +
        "    gl_Position = uMVPMatrix * aPosition;\n" +
        "    vTextureCoord = (uTexMatrix * aTextureCoord).xy;\n" +

crearo

/**
* It took me a whole 6 hours to finally get the color conversion right.
* I have a fairly good understanding of the various color formats (YUV420P, SP, 422, etc etc), 
* and how to access individual Y, U, and V components.
* I however struggled because of a very simple yet hair-pulling gotcha. 
* All primitives in Java are signed! If you come from a Python-like world where 0xFF prints 255, 
* you see yourself struggle just the same. I am however embarrassed at spending 6 hours on this.
*
* @author rish 
*/

crearo

import numpy as np
import cv2
from imutils.object_detection import non_max_suppression
from imutils import paths
import argparse
import imutils

"""
The parameters passed to the hog detector need to be played around
with to get optimum speed vs accuracy. This will always be a tradeoff.

crearo

'''
Performs software stabilization using optical flow + linear smoothing.
Vision algos used : 
- KLT for flow tracking
- Harris corner detection to detect points to be tracked in each frame

This is the Python translation I wrote of the original .cpp code written by nghiaho.com/?p=2093
'''
import cv2
import numpy as np

crearo

package com.rish.imagestab.utils;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashMap;

/**
 * Created by rish on 14/6/17.

crearo

'''
A small script to play videos of the same dimensions side by side.
I needed this while showing two videos side by side; one stabilized and one not stabilized during my 
works on video stabilization.
'''

import cv2, sys
import numpy as np

if len(sys.argv) < 3:

crearo

package com.tonbo.streamer.network;

import android.content.Context;
import android.content.IntentFilter;
import android.net.NetworkInfo;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.support.annotation.CheckResult;

crearo

/** A fragment shader to convert YUV420P to RGB.
  * Input textures Y - is a block of size w*h. 
  * texture U is of size w/2*h/2.
  * texture V is of size w/2*h/2. 
  * In this case, the layout looks like the following :
  * __________
  * |        |
  * |   Y    | size = w*h
  * |        |
  * |________|

crearo

/** A fragment shader to convert NV12 to RGB.
  * Input textures Y - is a block of size w*h. 
  * texture UV is of size w*h/2. 
  * Remember, both U and V are individually of size w/2*h/2, but they are interleaved.
  * The layout looks like this :
  * ----------
  * |        |
  * |   Y    | size = w*h
  * |        |
  * |________|

crearo

package rish.crearo.imagestabv2;

/**
 * Original author unknown.
 *
 * Modified by rish on 10/7/17.
 * [email protected]
 */

import android.content.Context;