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10:35 am
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Erica and Dominiqua
Erica and I went on a Bolivian adventure!
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01:16 pm
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baby snails
HOLY CRAP I FOUND TINY SNAIL EGGS!!!
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06:36 pm
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Transistor Curves
=D I don't think I need to say anything more!
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05:31 am
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Eclipse
mmm Eclipse
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11:17 pm
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K10D power plug from digikey
In case you have or know someone who has a K10D and you feel like making your own power supply =D
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07:26 am
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High Speed Fun
So I've perfected the 18KV high speed trigger. I actualy did this in December but I guess I neglected to post it. I also got a .22 single-shot rifle for christmas, which is perfect for this kind of stuff.
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07:23 am
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My photo on the cover of make magazine!
Check it out! I win!
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12:38 am
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more fuzz please
Ahem. I think everyone who knows my cats should see this one.
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03:15 pm
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Fresh, live, unstained blood!
Here I go poking myself with needles again....
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06:50 pm
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Suctoria Oblique
Oblique illumination YOU ARE MINE!
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12:09 pm
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Exploding Carrot
I got a pellet gun and some baby carrots last night. I ran some tests with the laser trigger -- test affirmative!
There are still some issues with the flash duration but I'm currently working on a 2KV capacitor bank as well as overclocking the CPU to better catch the pellet in its course. Better placement of the laser might help more as well...
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12:24 pm
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black bear cub
I went on a mushroom hunting trip with a mycology class from WSU over the weekend. We didn't find any matsutaki, but we did find a bear!! (or three?)
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02:07 pm
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IR Amar 2
My amaryllis is blooming for the SECOND time this summer! How cool is that! So I decided to photograph it in infrared.
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11:13 am
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human agri-culture
...
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07:18 am
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This morning I...
...Woke up at 4:30 AM
...Walked to class at 7:00 AM through the most beautiful blackpavement orangewet brownleafed bluesky morning
...Helped a dramaticblack spotted limax maximus across paradise path
...Found a dead baby garter snake that had been run over by a bicyclist and was being eating by some very large brown beetles
...Helped the most lemonyellow limax tenellus cross paradise path
...Examined the most amazing pale white (snowleopardslug?) limax maximus I've ever seen
...Saw all of three people on my walk, two of whom were VERY involved with each other and could barely walk straight
...Thought of writing this post
...Saw the firstmorningsun break golden through the clouds and shine onto the dewwet grass
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09:27 pm
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Strange Images
So I spent a little time last week coming up with
  
What this does, is take a bazillion images of something as it turns. Right now I have it taking 1500 images in one revolution which corresponds to the height of a photograph with my camera set to 1.5MP mode. To take more than this I will have to impliment a "pause" feature and dump the memory card...
Anyway, I wrote some scripts to interprit the data from this image sequence. We could call this x(s),y(s),z(t) where x and y are the dimensions of an image, s is a coordinate system in space as defined by the actual pixels on the sensor and z(t) is the run length of the image sequence which is obviously a function of time.
If we change this system to x(t),y(s), and z(s) meaning that the x axis is now time, and the y axis is space we can pick out frames on the z axis which are also space. If the z(s) is chosen such that it falls on the center of rotation (rotation is on the y axis) this leads to a simple "unrolling" effect which might actually be useful for 3d texture mapping or something if the camera was perpendicular to the rotation (which I didn't do, the camera is aimed slightly downwards into the object).
Example of this:
 
Of course, if I was smart I would have started the rotation with the objects facing AWAY from me so that the interesting parts, IE, the front would rotate around in the center BUT that said I still think that this is an interesting effect.
If this is not placed on the center of rotation (but still is on the object), the image is still unrolled but around a point in space not on the object and I like the results much better.
If we change the coordinates to x(s),y(t),z(s) such that the z(s) falls across just about any interesting part of the photo we get an amazing twirl effect that is somewhat mindboggling. Note that the lighting is still accurate even though we have really messed with things!
 
There are a couple interesting yet not exactly amazing things to do, such as a "progressive scan".
Adding in a simple s term against the direction of forward rotation to get x(t),y(s),z(t+s) yields some interesting warping that isn't exactly flattering. Note the three arms and legs and strangely shaped head.
And similarly x(s),y(t),z(t+s) with s chosen in any direction leads to a much more tangible form of the twirl effect.
It is interesting to note that the z axis can be scanned and animated into a movie, an incomplete version of the rotating skull in the x(s),y(t),z(s) coordinates can be found here (3.5MB). This is an xvid movie so go download the codec if you need it. The frames take about 10 min to render on an AMD64 3200 running gentoo linux, so the entire movie will take quite some time to render. I also plan to scan other variables including a z(s*t) image which should start with a "normal" image at s=0 and scan into some very twisted images as s plods on.
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07:02 pm
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Broken
I liked this self portrait so much I thought I'd post it.
Now to find darkroom time!
And yes it does say "fuck" behind me in block letters. It also says "unholy pink goats" on the door to the left :cP
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12:03 pm
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Photoshoot
The photoshoot this morning was sort of a surprise. Only one person showed up that I flyered. Christa and Cristal showed up but since they were like the center pieces thats to be expected.
I flyered all day sunday but the short notice and the early times were just too much for people, sadness.
And since I hadn't really thought of having such a small group (was hoping on 8 or so, expecting at least 4) all of my ideas had to be rethought so I'm not sure that I did the best that I could have done had I known I would be working with only three other people.
That said, Megan turned out to be a wonderfully natural model and we did discover the coolest little broken down area in between some grain silos. I can't wait to go home and develop the film!
 Here is the location of the shoot. A panorama I took a few days ago.
Current Mood:  anxious
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08:54 am
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new ideas
A friend introduced me to http://www.sparkfun.com/
Since then I have also discovered
http://www.batchpcb.com/
These two things have lead to the latest project (because now it is in my price range!)
based on http://www.sparkfun.com/commerce/product_info.php?products_id=637 I am making a critter cam! I amn hoping to use an MSP430F1232 which has an SPI USART that I can use to store the images to an SD card. I already have a prototype built, but I am still waiting on the camera. The board will have to be fabricated before it will be small enough to fit on an actual critter, but I hope to make a waterproof enclosure so that I can attach it to an animal such as a mink or a beaver. Once the memory card is full or the batteries get low I plan on using a watch battery to initialize a homing beacon that I can track down and retrieve the unit with. The images will most likely be in RAW format and I will have to process the data to get the image stream so it is not in realtime (yet!)
If I can find a low cost low power realtime JPG encoder IC then maybe I could stream the image stream wirelessly using an 80m 2.4ghz transciever module, which costs about $24 (I would need two of course).
So figure $20 for the board, $20 for the camera, the rest of it being passives and free samples and we're looking at a critter cam that could grab 640x480 images at around 5fps for a week (hopefully) for $40!! The limitation will be the battery, but it would also be possible to place to camera in a standby mode and take images in one second intervals, or perhaps in one hours bursts of 5min at 5fps like I saw national geographic did with the sea turtle camera (which costs upwards of $20,000!)
The design could be duplicated easily as well, and I could even try to sell them at cost to the biology department. Just an idea :c)
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02:04 am
[Link] | I sold 16 greeting cards today at the farmer's market! Yay!
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nebarnix's journal
