Media Data Formats Assignment

Sample images:

                     

Image no. 1:

 

Image Preferences:

Image resolution: 600x800

File size: 306 KB

Colors: 16 Millions

 Graph:

Compressing:

- With Dithering
I compressed the image and reduced number of colors from 16 million to only 64 and it still looks very nice. The file size is three times lower than the original file.

Image Preferences:

Image resolution: 600x800

File size: 107 KB

Colors: 64

- Without Dithering

I compressed the image and reduced number of colors from 16 million to 64 and it still looks nice too but we can discover that there are missing colors. The image file is bigger than the image with dithering because more colors are used.

Image Preferences:

Image resolution: 600x800

File size: 148 KB

Colors: 128

 

 Image no. 2:

Image Preferences:

Image resolution: 600x800

File size: 479 KB

Colors: 16 Millions

 Graph:

Compressing:

- With Dithering
I compressed the image and reduced number of colors from 16 million to only 64 and it still looks very nice. The file is more than three times smaller than the original file. Image has small dots in some places.

Image Preferences:

Image resolution: 600x800

File size: 174 KB

Colors: 64

- Without Dithering

I compressed the image and reduced number of colors from 16 million to 128 and it still looks nice but we can discover that there are missing colors on the sky. Probably sky has a lot of different shades of blue. The image file is bigger than the image with dithering because more colors are used.

Image Preferences:

Image resolution: 600x800

File size: 192 KB

Colors: 128

Image no. 3:

Image Preferences:

Image resolution: 600x800

File size: 385 KB

Colors: 16 Millions

 Graph:

Compressing:

- With Dithering
I compressed the image from 16 million number of colors to only 64 colors and it still looks very nice. The file is three times smaller than the original file.

Image Preferences:

Image resolution: 600x800

File size: 108 KB

Colors: 64

- Without Dithering

I compressed the image and reduced number of colors from 16 million to 256 because there is a lot of blue color (the sky covers more than 60% of the image) and the image much worse. The image file is bigger than the image with dithering because more shades are used.

Image Preferences:

Image resolution: 600x800

File size: 247 KB

Colors: 256

Conclusion:

If we set less colors there will be more small dots in the image (with dithering) and less shades of colors (without dithering).

In the image compressed without dithering there will not be much difference between images with 64 or 128 or even 256 colors.

Result: 

It is better to use compressing with dithering because of less size and better quality.

Thirteenth Week (30.11.2009 - 04.12.2009)

Computer Architecture - On Tuesday's Lab lesson we were finishing lab sheets exercises. On the lecture lessons we were doing revision.

Statistical Calculations - On a lab lesson we had assignment worth 15 %. On the lecture lessons still we were doing some exercises with Time Series Graph, Seasonal Index and Moving Average.

Creativity Innovation & Teamwork - We finished our Project Folder. In friday we had presentation and I think we did very well.

Networking Fundamentals - On the lecture lessons we were doing exercises  from past exam papers. On lab lesson we had final cisco exam and wireshark assessment.

Programming Fundamentals - We had 2-hours last Programming Assesment in C128 in monday.

Algorithmic Problem Solving - We had an 2-hours last Alice Assessment in IT 2.2 in friday.

Eleventh Week (23.11.2009 - 27.11.2009)

Computer Architecture - On Tuesday's Lab lesson we were finishing exercises with Flip Flops. On the lecture lessons we were learning about Information Systems.

Statistical Calculations - On a lab lesson we are still using MiniTab (we were doing exercises with Time Series). On the lecture lessons still we were doing some exercises with Time Series Graph, Seasonal Index and Moving Average.

Creativity Innovation & Teamwork - I finished evaulation of my clues for Team Project. Everything is going well at the moment.

Networking Fundamentals - We were working with Switch and Switch MAC Table still on the virtual machine. On the lecture lessons we were doing exercises  from past exam papers.

Programming Fundamentals - We are still programming in Visual Basic Express 2005. We were doing some exercises with List Boxes.

Algorithmic Problem Solving - We are still programming in Alice. We were doing some exercises from notes.cit.ie.

Tenth Week (16.11.2009 - 20.11.2009)

Computer Architecture - On Tuesday's Lab lesson we were finishing exercises with Decoders and Multiplexers. On the lecture lessons we were learning about Flip Flops.

Statistical Calculations - On a lab lesson we are still using MiniTab. On the lecture lessons we were doing some exercises with Time Series Graph, Seasonal Index and Moving Average.

Networking Fundamentals - We were working with Switch and Switch MAC Table still on the virtual machine. On the lecture lessons we were doing some exercises with Subnetting from exams papers and we learnt what is Physical Layer in OSI Model.

Programming Fundamentals - We are still programming in Visual Basic Express 2005. We were doing some exercises with List Boxes.

Algorithmic Problem Solving - We are still programming in Alice. We were doing some exercises from notes.cit.ie.

Nineth Week (09.11.2009 - 13.11.2009)

Computer Architecture - On Tuesday's Lab lesson we were finishing exercises with Decoders and Multiplexers. On the lecture lessons we were learning about Karnaugh Maps.

Creativity Innovation & Teamwork - I finished research fo Treasure Hunt. Everything is going well at the moment.

Statistical Calculations - On a lab lesson we are still using MiniTab. On the lecture lessons we were doing some exercises with Time Series.

Networking Fundamentals - We were working with Wireshark and arp command still on the virtual machine. On the lecture lessons we were doing some exercises with Subnetting from exams papers and we learnt what is MAC address in the Data Link Layer in OSI Model.

Programming Fundamentals - We are still programming in Visual Basic Express 2005. We were doing some exercises with While Loop.

Algorithmic Problem Solving - We are still programming in Alice. We were doing some exercises from notes.cit.ie.

Eighth Week (02.11.2009 - 06.11.2009)

Computer Architecture - On Tuesday's Lab lesson we were finishing Adders (Half-Adder and Full-Adder) exercises. On the lecture lessons we were learning about Multiplexers, Demultiplexers, Encoders and Decoders.

Creativity Innovation & Teamwork - On Friday we gathered up in IT2.3 to discuss about our Treasure Hunt.

Statistical Calculations - On a lab lesson we are still using MiniTab. On the lecture lessons we were doing some exercises with Correlation and Scatter Diagrams.

Networking Fundamentals - We were working with Wireshark and ping command still on the virtual machine. On the lecture lessons we were doing some exercises with Subnetting from exams papers and we learnt what is Data Link Layer in OSI Model.

Programming Fundamentals - We are still programming in Visual Basic Express 2005. We were learning how to use While Loop.

Algorithmic Problem Solving - We are still programming in Alice. We were doing some exercises from notes.cit.ie and in Friday we had next Alice Assessment in IT2.3.

Seventh Week (26.10.2009 - 30.10.2009)

Computer Architecture - On Tuesday's Lab lesson we were doing some Adders (Half-Adder and Full-Adder) exercises. On the lecture lessons we learnt a little bit about Adders, Sum of Products and Karnaugh Maps.

Creativity Innovation & Teamwork - We got a new assignment to do in groups. This assignment is worth 70% of the overall CIT mark. It's very important so we have to do this very good. We have 4 weeks to do this. Our clue for Treasure Hunt is: "The worlds only five sided flag". We divided it to 5 parts (5 letters parts) so each member of the team have to do 10 clues (2 clues for 1 letter).

Statistical Calculations - On a lab lesson we are still using MiniTab. On the lecture lessons our lecturer gave us new handout (Regression And Correlation). We were doing some exercises with Two Variable Linear Regression & Correlation and Scatter Diagram

Networking Fundamentals - We were working with IP and MAC's Adresses still on the virtual machine. On the lecture lessons we were learning about Subnetting.

Programming Fundamentals - We are still programming in Visual Basic Express 2005. We learnt how to use While Loop.

Algorithmic Problem Solving - We are still programming in Alice. We were doing some exercises from notes.cit.ie and at last we got marks for the Alice Assessment (I got 96% )

26.10.2009 was off-day