Showing posts from April, 2013

My Diigo Bookmarks (posted weekly)

My Diigo Bookmarks (posted weekly)

My Diigo Bookmarks (posted weekly)

Google Drive (googledrive) on Twitter tags: Google DriveGoogleTwitter Google Drive - Google+ tags: 'GoogleDrive Google+ Google Use the Crucial System Scanner software to find out what type of memory is in your computer tags: CrucialmemoryutilityTEJTEJxxscannerdownload Google Public Policy Blog: Plan your digital afterlife with Inactive Account Manager Google Public Policy Blog: Plan your digital afterlife with Inactive Account Manager (Good idea!) tags: Beens' Blog: ETFO Ruling -- I Don't Get It Blogged: "ETFO Ruling -- I Don't Get It" - tags: Only half of pupils like to read, survey finds | Toronto Star Is it more important that kids enjoy reading or that they score higher on standardized tests? Can we have it both ways?– Jeanne Conte (contej)…

ETFO Ruling -- I Don't Get It

According to this news item that came out yesterday, "The Elementary Teachers Federation broke the law when it advised members to withdraw from extracurricular activities." But then later in the article it states "The union said it will abide by the ruling, adding the decision confirms its assertion that the advice to members about withdrawing voluntary services was not a directive."
I don't get it. If the advice was not a directive, then why was it illegal? Can someone explain this to me?

My Diigo Bookmarks (posted weekly)

OCTE Request for Writers -- Phase III of the Schedule F-docs project (TXJ, TFJ, TPJ)

In collaboration with the Ontario College of Teachers (OCT), the Ontario Council for Technology Education (OCTE) has agreed to manage the draft development of Schedule F Technology Emphasis Course Guidelines. We are currently in Phase III of this project and looking for writers in Hospitality and Tourism, Health Care and Hairstyling and Aesthetics.

For more information, visit

If you have any questions, please contact Sergio Borghesi at

Using OpenCV in Python to Remove Colours in Images

I'm experimenting with the OpenCV programming library as part of the Computational Photography course I'm taking at Coursera. I don't know if I'll be able to finish the course due to my other obligations, but I just thought I would share my first little test program so that my students might benefit.

This program reads in a picture file, then simply strips off the red, green, and blue channels and saves the files.

I've written the program so it can easily be adapted for other picture files. Simply replace "flower" with the base part of your filename in the img_base_name variable and enter the path to your picture file in the img_path variable. Note that the OpenCV and the numpy libraries must be installed and that you need to be using Python 2.x.

Here's my program:

# imports
import cv2 # the computer vision library, from import numpy as np # wasn't needed but is always imported in examples
# make it easy to modify the program to use…