The Quiet Man's T-Shirt idea
By sub_o 6 Comments
Just me fooling around. Here's my million dollar idea for The Quiet Man's tee, in case that I start suffering from retrograde amnesia.
Just me fooling around. Here's my million dollar idea for The Quiet Man's tee, in case that I start suffering from retrograde amnesia.
Here's the result of applying Non Rigid Face Tracking on Brad, Rorie, and Vinny, while they were talking about Dark Souls 2.
Basically this computer vision algorithm goes like this:
It's not perfect, it depends on the lighting of the scene, requires 'non difficult' head movement. Anything that depends on Machine Learning is also based on probability, but again this is not a state of the art, there are more robust algorithms out there.
If you're interested, I have the source code here: https://github.com/subokita/Sandbox/tree/master/NonRigidFaceTracking
I have no fucking idea why I decided to post this on GiantBomb though.
Here's the result of applying Non Rigid Face Tracking on Brad, Rorie, and Vinny, while they were talking about Dark Souls 2.
Basically this computer vision algorithm goes like this:
It's not perfect, it depends on the lighting of the scene, requires 'non difficult' head movement. Anything that depends on Machine Learning is also based on probability, but again this is not a state of the art, there are more robust algorithms out there.
If you're interested, I have the source code here: https://github.com/subokita/Sandbox/tree/master/NonRigidFaceTracking
I have no fucking idea why I decided to post this on GiantBomb though.
Here are some items that I got / purchased this October 2013.
My mid 2009 Macbook Pro died after using it intensively for few months to train multiple number of SVMs. So I got myself an 11 inch Macbook Air.
This thing is small and light !
I also bought Kingdom Hearts 1.5 HD Remix. The artbook is bit sparse though.
My in-ear Sennheiser earphone was not functioning properly, so I finally decided to cave in and get myself a bluetooth headphone, Sony MDR-1RBT. Going wireless is liberating.
And finally I completed my Master Degree from Technical University of Munich ! My major (Computer Vision) was gruelling for me, but I learned a lot. My grade is just okay, I'm not complaining.
Note: Again, this is boring nerdy trick similar to methods to check divisibility of numbers that I posted before.
Say that you want to square the number 73 and you don't have a calculator near you ? So what can you do ? Well, that might not always be the case, but you can use this as a party trick, or to check the results of your calculations, etc.
To be able to square 2 digits number from the top of your head, you need to be able to do these two things:
1. Multiply single digit number with 2 digits number in your head.
Well, this is not really a joke. Normally when we do multiplications using pen and paper, say multiplying 7 with 76, what we would do is to multiply the number from right to left side, and writing down the carry overs.
But in order for this trick to work, you need to reverse the order of your usual multiplication methods. Do it from left to right instead.
E.g. when you are doing 76 x 7, first remember that 70 x 7 = 49, then 7 x 6 = 42, then add 42 to 490, to get 532.
2. Remember the squares of all single digit numbers
e.g. 7 x 7 = 49, 4 x 4 = 16, etc
1. Find the nearest multiple of ten from the 2 digit number.
Say that you're squaring 73, the nearest multiple of ten is 70, which is 3 less than 73. Or say that you're squaring 49, the nearest multiple of ten is 50, 1 more than 49.
2. Add and subtract the difference between the original number and the multiple of ten to come up with 2 different numbers
In the case of 73, nearest multiple of ten is 70, which means that you should end up with 70 (i.e. 73 - 3) and 76 (i.e. 73 + 3). Or in the case of 49, then it should be 50 and 48.
3. Now multiply that 2 numbers together.
Since one of the numbers are multiple of ten, you will end up with multiplications of 2 digit with single digit numbers. E.g. 70 x 76 is essentially 7 x 76, while appending extra 0 at the end, which ends up with 5320, or 48 x 50 = 2400, etc.
4. Square the differences from step 2, and add it to final result
So while squaring 73, the difference is 3, and the result of 76 x 70 = 5320. What you should do is to square the difference (i.e. 3 x 3 = 9), and add to final result, thus yielding 5329. Which is the square of 73.
Same applies to 49 x 49, the previous result is 2400, and the difference is 1, thus, final result is 2401.
Sample exercises:
1. 64 x 64.
first step: nearest multiple of ten = 60
second step: 60 and 68 (difference = 4)
third step: 4080
final step: 4080 + 16 = 4096
2. 45 x 45.
first step: nearest multiple of ten = 40 (and 50)
second step: 40 and 50, (diff = 5)
third step: 2000
final step: 2000 + 25 = 2025
3. 81 x 81.
first step: nearest multiple of ten = 80
second step: 80 and 82, (diff = 1)
third step: 6560
final step: 6560 + 1 = 6561
With enough practice (just do it in your mind while washing dishes or ironing your clothes), you can perform this trick fast enough to impress your peers.
The ability to check whether a number is divisible by, say 4 or 9, seems to be useless at first.
But it could be a time saver when you're trying to check the result of your calculation without resorting to a calculator. Or it could be a mental trick (or what Arthur Benjamin says as Mathemagic) which you can use it for fun while drinking some beers in the pub.
Here are some of them:
Very simple, check if the last digit is even or not. Thus 928474712 is divisible by 2, while 361635 is not.
Quite simple, sum up all the digits in that number, and check if it's multiples of 3.
Say you have a 7 digit number 9282648.
Sum up all the digits in that number, i.e: 9 + 2 + 8 + 2 + 6 + 4 + 8 = 39
39 is divisible by 3 (39 / 3 = 13), thus 9282648 is divisible by 3 ( 9282648 / 3 = 3094216 )
or you can go several steps further, keep summing up the digits, i.e. 3 + 9 = 12 then 1 + 2 = 3
Check if the last 2 digits are divisible by 4( or if you didn't memorize multiplication table of 4, then check if you can divide the last 2 digits of the number twice, since, you know 4 = 2 x 2 ).
Example: 948137924 is divisible by 4, since 24 is 6 x 4. ( 948137924 / 4 = 237034481 )
Check if the last digit is 5 or 0 (e.g. 242452525, or 80808083130 )
Similar to divisibility by 3, but the original number should be even number.
E.g. 9282648 is divisible by 6 and 3, while 9282645 is divisible by 3 but not by 6.
For divisibility by 7, I only know the trick that uses recursive method.
Example: 2443
The last 3 digits should be divisible by 8. If it's hard to check if 3 digits number is divisible by 8, try to divide it by 2 for 3 times (since 8 = 2 x 2 x 2)
Example: 24752, last 3 digits = 752.
If it's hard to see whether 752 is divisible by 8, then keep subtracting 752 with 200, until you reached a number below 200, which is in this case 152, which is divisible by 8 (152 / 8 = 19).
Thus 24752 is divisible by 8 (24752 / 8 = 3094)
Similar to divisibility by 3, but this time it will end up with multiple of 9, or if you keep doing it, it will end up with 9.
Multiple of 9 is very pretty, since
1 x 9 = 09 | 6 x 9 = 54 |
2 x 9 = 18 | 7 x 9 = 63 |
3 x 9 = 27 | 8 x 9 = 72 |
4 x 9 = 36 | 9 x 9 = 81 |
5 x 9 = 45 | 9 x10= 90 |
The sum of the digits of the result will always be 9.
Example: 1111111101 is divisible by 9, since 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 1 = 9. (1111111101 / 9 = 123456789)
or 7992 is divisible by 9, since 7 + 9 + 9 + 2 = 27, and 2 + 7 = 9. (7992 / 9 = 888)
There you go, I posted it after trying to figure out what's being outputted by OpenCV's HOGDescriptor's compute function, since it gives me a 1D vector of floating numbers with the size of 7 digit numbers. Then after pondering a while, I realized that the size of that 7 digit numbers is divisible by 9, thus it should be a flattened version of 9 normalized bins. You don't need to understand what I am saying though.
This is another self indulgent post.
So I've been drawing on my iPad (1st gen) using Paper app, which I previously wrote about here: http://www.giantbomb.com/forums/off-topic/31/drawings-paintings/546791/
I think I managed to learn a lot in this past 2 months. Below are some of the results, please take note that most of the images are based on results from Google search
Then I decided to switch from Paper app, to Procreate app, which offers layer functionality, more colors, and more brushes. Essentially it's more flexible. At that time I also decided that I should learn to draw realism drawings / paintings. If I managed to learn it, then great, else I still managed to learn something.
Not sure what I am trying to say in this blog post. Try again and again, maybe ? Or maybe iPad is quite good as a drawing tablet.
Anyway I have more drawings on my tumblr page sub-okita.tumblr.com .
PS: Moderators, please remove the link if you find it's necessary to do so.
I've been busy with my graduate school work for past few weeks, and trying to fill in some free time in the morning by drawing / painting on my iPad.
I am self taught in drawing, and relatively new in painting. All of these are done on iPad using Paper app, which doesn't have layers, so I did stumble onto some difficulties, especially in drawing backgrounds. Most of the original images are actually photographs that I found on Google Image Search, but the inability to draw detailed backgrounds, made me focus on the objects themselves, thus creating a portrait like drawings.
For now, I am actually pretty happy with the result (considering it's self taught, and I am filling time while working on computer vision projects).
And here are some of the results:
Most of them are taken from Wikipedia and Google. Please correct me in the comment section, if I made any mistake, or when you have better and simpler explanation or something to add (please refrain from using harsh words or insults, we're all here to learn)
I have no idea which sauce was Drew referring to, when he talked about his food adventure in China. Neither do I know about the mushroom look alike fried potato. Don't speculate.
PS: If you don't have a premium membership yet, the 2 hours long interview with Drew about his trip to North Korea is both funny and fascinating.
Since fact checking ruins podcast, I'll ruin it for you.
.... is composed of materials ingested during the time the infant spends in the uterus
PS: I am from South East Asia, so it's highly probable that I know nothing about American culture or events.
PPS: Don't be discouraged by sending emails to the bombsquad, email section is one of my favorites.
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