blackball

/**
 * Fast non-maximum suppression in C, port from  
 * http://quantombone.blogspot.com/2011/08/blazing-fast-nmsm-from-exemplar-svm.html
 *
 * @blackball (bugway@gmail.com)
 */

#include <stdio.h>
#include <stdlib.h>
#include <limits.h>

blackball

// 0.有时候，我们需要在两个不同的值之间切换，类似于开关。普遍的做法是:
if (t == value0) {
   t = value1;
} else {
  t = value0;
}
// 条件分支是一个开销相对较大的操作，所以，另外一种高效的做法是：
t = value0 + value1 - t;
// 为了避免value0或者value1值都较大，可以加上一括号：
t = value0 + (value1 - t);

blackball

/**
 * well, I feel it's annoying to configure gsl everytime
 * for PF tracking, so, I made a new one according to gsl.:)
 * @author blackball @date Feb.12.2011
 * @todo this filename is worng, change it to gsl_rng_dist.h 
 */

#ifndef _GSL_RNG_MT_H_
#define _GSL_RNG_MT_H_

blackball

/**
 * Definition of ...MT random number generator
 * @author blackball @date Feb.12.2011
 **/

#include "gsl_rng_mt.h"
#include <malloc.h>
#include <math.h>

#define N 624

blackball

/**
 * Binary search tree, a C implementation.
 *
 * I hope it could be a bit more efficient ;)
 *
 * @blackball
 */
#include <stdlib.h>

/* for futher use */

blackball

/* Simple linked-list demo */

typedef struct node{
  void *data;
  struct node *next;
  struct node *prev;
} node;

node* create(node **ns, void *data);
node* search(node **ns, void *data);

blackball

#include "vpack.h"
#include <stdio.h>

struct Model
{
  char c;
  int pts[4];
  float vec[1024];
};
  

blackball

#!/usr/bin/python

"""
Simulate a command pipe in windows.
reason: I always need to do batch processing 
in my dailylife, rename a bunch of files, 
generate some sets from it, and move files 
into different folders. Or, I have a module,
and I need to processing lots of file, but,
this module can only process one at most, and I

blackball

//----------.h file ------------
#ifndef MYVIDEOWIDGET_H
#define MYVIDEOWIDGET_H

#include <QtOpenGL/QtOpenGL>
#include <QtGui/QImage>

class MyVideoWidget : public QGLWidget
{
    Q_OBJECT

blackball

int pack_arr(struct db *dbase, void *data, int len)
{
  int code = -1;

  struct db_node *node = new_node(len);
  memcpy(node->data, data, len);
  // insert node into dbase
  dump(dbase, node);
  
  code = 0;