boyihu

from scipy.signal import butter, lfilter

def butter_bandpass_filter(data, lowcut, highcut, fs, order=5):
    nyq = 0.5 * fs
    low = lowcut / nyq
    high = highcut / nyq

    b, a = butter(order, [low, high], btype='band')
    y = lfilter(b, a, data)
    return y

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boyihu

from __future__ import division, print_function

import numpy as np
from scipy import signal
import matplotlib.pyplot as plt


def plot_response(fs, w, h, title):
    plt.figure()
    plt.plot(0.5*fs*w/np.pi, 20*np.log10(np.abs(h)))

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#!/bin/sh
image_path=/home/carpedm20/imagenet
for name in $image_path/val/*.JPEG; do
  convert -resize 256x256\! $name $name
done

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#!/usr/bin/python
# -*- coding: utf-8 -*-

# Author: Axel Angel, copyright 2015, license GPLv3.

import sys
import caffe
import numpy as np
import lmdb
import argparse

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Compile FFmpeg on Ubuntu

This guide supports Ubuntu Precise Pangolin 12.04, Ubuntu Oneiric Ocelot 11.10, Ubuntu Natty Narwhal 11.04, and Ubuntu Maverick Meerkat 10.10. Separate guides are available for Ubuntu Lucid Lynx 10.04 and Ubuntu Hardy Heron 8.04. This guide will enable several external encoding and decoding libraries: libfaac (AAC encoder), libfdk-aac (AAC encoder), libmp3lame (MP3 encoder), libopencore-amr (AMR encoder/decoder), librtmp (for additional RTMP protocols), libtheora (Theora encoder), libvorbis (Vorbis encoder), libvpx (VP8 encoder/decoder), and libx264 (H.264 encoder). These are optional and may be omitted if desired. This guide will also install many filters (see the filter list in the [Filtering Guide](https://ffmpeg.org/trac/ffmpeg/wiki/Fi

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#!/bin/bash

# Bash script to install latest version of ffmpeg and its dependencies on Ubuntu 12.04 or 14.04
# Inspired from https://gist.github.com/faleev/3435377

# Remove any existing packages:
sudo apt-get -y remove ffmpeg x264 libav-tools libvpx-dev libx264-dev

# Get the dependencies (Ubuntu Server or headless users):
sudo apt-get update