Progress Senior Project - 12/5/2009

Today I just made my song can play rhythm and melody simultaneously. I use melody as channel 0 and the drum as channel 9

Mary has a little lamp <<<[listen]>>>

I still have some problem about this, because the rest sign (-) need to play the previous note continuously but I can't make it yet.

Laodungdern <<<[listen]>>>

Next, I need the soundbank of Thai flute. My senior friend said he has one, so my next problem is how can I use it properly. If someone know the method, please tell me. I hope I can finish this part within new year... (_/|\_ สาธุ)

Progress Senior Project - 12/1/2009

This week, we seperate the work into 2 part. First the OCR thing, I let my friend take care of it and second is MIDI.

Today, I just write program to generate the sound, that's Marry have a little lamp. You know what, I heard that Thomas Edison made the first recording of the human voice in 1877 with this song. I don't know why I selected this song but when I work with the sound or playing music, I always start with this song. By the way, next I'm going to make the song able to have the rest sign (-) and then make the rhythm. Actually, I think I already done this part but my problem is how to use the Thai sound bank. I hope I can finish this part within this weekend. So let see the flow...

Oh! we forgot to tell you that we decided to work with Python because I already learn about image processing by using Python. For making python can work with midi, I use midipython library (link http://www.mxm.dk/products/public/pythonmidi) and for image processing, I use openCV library (link http://opencv.willowgarage.com/wiki/).

As I tell you on the Progress report last month, after we have the music characters then we make sound from it. Midi represent the sound by the number and sequence like

• midi.note_on(channel=0, note=do)

So to make the sound we have to define the number of note (from ลฺ till ซํ)

• a3=57 (ลฺ)
• b3=59 (ทฺ)
• c3=60 (ด)
• d3=62 (ร)
• e3=64 (ม)
• f3=65 (ฟ)
• g3=67 (ซ)
• a4=69 (ล)
• b4=71 (ท)
• c4=72 (ดํ)
• d4=74 (รํ)
• e4=76 (มํ)
• f4=77 (ฟํ)
• g4=79 (ซํ)

Then we make the event for the song and generate into sound.

• midi.update_time(time)
  midi.note_on(channel, note)
  midi.update_time(time+sequence)
  midi.note_off(channel, note)

Sound easy, isn't it? I think so but the important point of this project is OCR. Now we just work on blob coloring. I hope that we can recognize the character soon.

Now I feel like I have done a little bit farther. ^^ And oh! this is my first MIDI song -> http://www.mediafire.com/?iymjnwzjncz I hope it would be better next time.

Star map

This is my final project about Advance Database subject.

We are going to do Star Map, which used the spatial database platform. This project will show the star in the selected period. The user selects the date and time. Then the result will show by the probable of the stars that you can see in the selected period. The system will store the star map, group of the star name and the magnitude of each star (the brightness).

I got 14/15 point for this project. (still feel like how can i got such a lot of this score) For the program, I think it was pretty cool but in term of technique I think it wasn't good enough. The picture that I use, it was create from drawing program (yes I draw it by myself to show every day) and the database I have my friend to point all of the star in the map, we have about 300 stars in database. To query, we fixed the star point and query the area that define by selected date instead of move the star into the appear area. And we change the name from Star map into Thailand Star map at midnight because we can show only the map in Thailand and only for midnight of everyday. (At the presentation, we have only the 1st and 16th of each month. We can't do the entire on time)

Another guy who work in the same project as me, it's very very good.... He wrote program to draw the map by calculate each star and his map was very beautiful. How dare I work in the same project as him. His grade was reduce because he always late in the class. (OMG!)

Project Detail: http://docs.google.com/fileview?id=0B-Ls4RhAgiHeYzAzZWQ1MzQtZmJlNS00ZjQ5LTg5YWUtOTNkYWZjMTM5NmQw&hl=en

Final report: http://docs.google.com/fileview?id=0B-Ls4RhAgiHeZmJhY2M1Y2QtZGM1My00ZGEzLTllNDYtYWY3ZGQwNzQzYjBj&hl=en

Members

1. Patama Ramchune ID 49270621 <--- Hey! it's me!

2. Phetjarin Thipkeaw ID 49270636

Final

We finish the final exam... fweeeewww

I've already know my grade for 2 subject. (Actually only 1 but I think another one I should get "A" Hehe) I got a B for Advance database and I hope I'd get a A for Academic writing.

At Advance database final examination day, I feel very blur from the guy next to me. He's smoker. Hate him! I almost be the cheater because I took the exam. paper out side the exam. room with me. O_o I very blurred. @ @ next time please make sure that your breath is not smell so bad.

I think, that time should be the Electric Engineering student. Hope no more for next time. Thanks

Project Proposal

We have added some information about the OCR and MIDI theory. We also have the platform of reading Thai music notation too.


[download]Progress report[front page]: http://docs.google.com/fileview?id=0B-Ls4RhAgiHeNmY0YjdiMzUtMGMxOC00NzcyLWFiNWMtNTYwZDNiNWJhZWNi&hl=en




Progress report: http://docs.google.com/fileview?id=0B-Ls4RhAgiHeMThjZDI3NTItNjJmNy00ZTQ3LThkYTItZTE5ZTJmZmQxMWY5&hl=en


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Thai music notation Platform


2.1 Thai Music Notation Thai music notes can be represented by using symbols to define the voice manners. The 3 basic symbol sets consist of 1. Pitch of the note. 2. Duration of the note. 3. Other special symbols. 1) Pitch Pitch of Thai music is determined by 7 characters of Thai language plus pitch (.) which is placed below the characters to represent low voice, and the a high-point (.) which is placed over the characters to represent high voice as you can see in the table below.

Table 2.1 The notation representation

Low voice	General Thai music voice	High voice
ดฺ (Low Dole)	ด (Dole)	ดํ (High Dole)
รฺ (Low Re)	ร (Re)	รํ (High Re)
มฺ (Low Me)	ม (Me)	มํ (High Me)
ฟฺ (Low Fa)	ฟ (Fa)	ฟํ (High Fa)
ซฺ (Low Sol)	ซ (Sol)	ซํ (High Sol)
ลฺ (Low La)	ล (La)	ลํ (High La)
ทฺ (Low Si)	ท (Si)	ทํ (High Si)

2) Duration The duration of the Thai note is indicated by measures of the duration. 2.1) Measure Measure performs as beat in international music. It will move forward slow and fast constantly. Every note recording line contains 8 music rooms where the rhythm always will be placed in the end of Thai note in each music rooms.

1

2

3

4

5

6

7

8

2.2) Note arrangement Each music room includes 4 sub-unit beats..

1234

1234

1234

1234

1234

1234

1234

1234

In Thai music notation system, each Thai music note and each symbol –(minus) equal 1 length of rhythm. 

-- equals –ด 

-ด equals รด

--ด equals -รด 

ม-ด equals -มด

-ม-ด equals -มรด 

When the symbol - (minus) is placed on the end of any letter it will extend the sound of the notes 1 sub-unit beat. 

For example: 

ม/---ช/---ล/-ซ-ล/ 

Me---Sol----La---Sol---La 

1234/1234/12/121/ 

Both Thai music note and symbol – (music) can swap their positions follow the melody of the music. Therefore, the symbol arrangement can be in many forms as you can see in an example below.

Case1 : 1 note per room

/---ซ / --- ม / --- ร / ---ด / 

Case2 : 2 notes per room

/ -ล-ล / -ม-ล / -ล-ซ / -ม-ล/ 

Case3 : 3 notes per room

/ -มซม / -ดมร / -มซด / -ลลล /

Case4 : 4 notes per room

/ ซลดร / มรดล / ชลดร / รรรร /

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[Senior Project] OCR [1]

OCR

There is several ways to use image processing on OCR program, but we decided to use these 2 algorithms.

1. Blob Coloring

We are using Blob coloring technique for OCR. Once an image has been segmented into as number of regions using thresholding or another method, it is often useful to identify each of the connected components in the image. The process of assigning each distinct region unique identifiers is called blob coloring. Blob coloring program uses a simple recursive search algorithm to find all points connected a starting point. Several program options enable the user to search for white objects on black backgrounds or vice versa, and vary the definition of "connected" to use 4 neighbors or 8 neighbors. (But we use 4 neighbors)

Blob coloring algorithm has two passes. In the first pass, colors are assigned to image pixels by using 4 neighbors, L-shaped mask. Color equivalences are established and stored, when needed. In the second pass, the pixels of each connected region are labeled with a unique color by using the color equivalences obtained in the first pass.

After we have the color equivalences of all character, we draw the crop line of each character for define the character.

2. Matching with database

For the database character, we have 7 character of each tone and define the ration of width and height and group them by the result. (More than 1, 0-1, less than 1) Because it can simplify for compare with the scanned text.

After we have cropped character, for each character we find the ratio of width and height. When we have the ratio of scanned character, then we match the character with the database character in the same group of ratio. (From this algorithm, we can eliminate some character from database) After that, we use sum square error for recognize the most similar character between scanned texts and database.