Skip to main content

IMGStore houses your video frames

Project description

IMGStore houses your video frames

IMGStore allows to read (and write) videos recorded with loopbio’s Motif system.

Example: write a store

import imgstore
import numpy as np
import cv2
import time

height = width = 500
blank_image = np.zeros((height,width,3), np.uint8)

store = imgstore.new_for_format('jpg', mode='w', basedir='mystore', imgshape=blank_image.shape, imgdtype=blank_image.dtype, chunksize=10)

for i in range(40):
    img = cv2.putText(blank_image.copy(),str(i),(0,300), cv2.FONT_HERSHEY_SIMPLEX, 4,255)
    store.add_image(img, i, time.time())


Example: read a store

from imgstore import new_for_filename

store = new_for_filename('mystore/metadata.yaml')

print 'frames in store:', store.frame_count
print 'min frame number:', store.frame_min
print 'max frame number:', store.frame_max

# read first frame
img, (frame_number, frame_timestamp) = store.get_next_image()
print 'framenumber:', frame_number, 'timestamp:', frame_timestamp

# read last frame
img, (frame_number, frame_timestamp) = store.get_image(store.frame_max)
print 'framenumber:', frame_number, 'timestamp:', frame_timestamp


Most of IMGStore dependencies are in the python package index (pypi), with the honorable exception of opencv. If you have a python environment with opencv already installed on it, you should be able to install IMGStore with a command like:

pip install imgstore

Install in Ubuntu 14.04

# install opencv, pandas and virtualenv
sudo apt-get install libopencv-dev python-opencv python-virtualenv python-pandas

# generate virtual env
virtualenv ~/.envs/imgstore --system-site-packages

# activate the virtual env
source ~/.envs/imgstore/bin/activate

# install imgstore
pip install imgstore

Install in Mac OS X

Install Homebrew, you probably have to install Xcode first.

Then run:


brew install python

brew tap homebrew/science
brew install opencv3 --with-ffmpeg

# follow the instructions at the end of the install
echo /usr/local/opt/opencv3/lib/python2.7/site-packages >> /usr/local/lib/python2.7/site-packages/opencv3.pth

# install imgstore
pip install imgstore

Project details

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Filename, size & hash SHA256 hash help File type Python version Upload date
imgstore-0.1.3.tar.gz (886.9 kB) Copy SHA256 hash SHA256 Source None

Supported by

Elastic Elastic Search Pingdom Pingdom Monitoring Google Google BigQuery Sentry Sentry Error logging AWS AWS Cloud computing DataDog DataDog Monitoring Fastly Fastly CDN SignalFx SignalFx Supporter DigiCert DigiCert EV certificate StatusPage StatusPage Status page