Now Pictures On The Internet Can Be Faked

October 27, 2011 by Brian Benchoff 56 Comments

We know it’s shopped, but we can’t tell because of the pixels. PhD student [Kevin Karsch] along with a few other friends will be presenting their methods to render objects into preexisting photos at SIGGRAPH Asia next month.

The paper (PDF…) covers how [Kevin] et al. go about putting impossible objects into photos. The user first defines the geometry of the picture; legs of tables are defined and the table top is extruded from these legs. The lights are then defined by drawing a bounding box and with a little bit of algorithmic trickery, a 3D object is inserted into the scene.

Comparing the results to the original picture is jaw-dropping. For us, photoshopping a bunch of billiard balls on a pool table would take hours, and it would never look quite right. [Kevin]’s work for SIGGRAPH can do the whole scene in minutes and produces results we couldn’t dream of.

There’s no downloadable software yet, but the algorithms are there. Check out the video demo of the techniques and results after the break.

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Halloween Hacks: Simple Robotic Skull Is A Perfect Last Minute Decoration

October 27, 2011 by Mike Nathan 3 Comments

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simple_talking_skull

If you haven’t taken the time to put your decorations together it’s time to get a move on. With Halloween just around the corner big elaborate displays are pretty much out of the question, but [Boris] and the team over at Open Electronics have a simple project that’s sure to be a hit with the Trick or Treaters.

Using a cheap plastic prop that you can likely find at any Halloween store, they have put together a simple talking skull that moves along with whatever music or sound is being piped through it. The skull’s mouth is moved by a single servo mounted inside the brain cavity, which is controlled by an Arduino. The Arduino monitors the sound level of the source audio being played, actuating the servo accordingly.

It’s quick, simple, and effective – perfect for a last minute decorating project. If you are a little more ambitious, you could always put together a whole chorus of skulls without too much additional effort – just a few extra skulls and some servos would do the trick nicely.

Check out a quick video of the skull in action below, along with another short clip showing how the servo is rigged up to move its mouth.

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Rooting Sony PRS-T1 Lets You Get At The Android Goodies

October 26, 2011 by Mike Szczys 25 Comments

Cries of “I am root!” abound once again with the rooting of Sony’s PRS-T1 eBook reader. The eBook Reader Blog took the original rooting directions and then looked at some of the things you can do with root access.

This hardware is based around an ePaper display, but we must say that the performance seems to be fantastic. There may be a few missing features from the original user interface (like how pages are turned) that can be fixed with root access, but we think it’s the added Android access that makes this worth it. In the video after the break you’ll see that you can drop through to the Android 2.2 desktop and install any application you’re interested in using. This is a multi-touch display so it’s well suited for navigation although applications don’t work well yet because of excessive screen refreshing. But we’re sure that will improve with time. Of note is the ability to play music through apps like Pandora, and the ability to load content from other providers like Amazon books via the Kindle app.

Every time we write one of these rooted features we can’t help but think back to this I’m a Mac spoof video…. you’ll see why in the last few seconds.

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Macetech Takes On Its Own Ambilight Clone Hack

October 26, 2011 by Mike Szczys 23 Comments

[Garrett Mace] decided to beef up his 58 inches of plasma with 60 Watts of LED lighting. After seeing a ton of Ambilight clones using his LED modules, he’s built his own powerful system. Not surprisingly, it’s nothing short of professional-grade work.

Kudos to [Garrett] for showing the entire process in the video after the break. We’re talking about his planning stages, which are so often left out of build logs. He first measures the back of the television, and does some testing for distance and angle of the Satellite LED modules to establish how many should be used and to estimate the optimal spacing. From there he modelled a framing system before getting down to the actual build.

The wood frame is made up of a box with a horizontal crossbar serving as a place to mount the drivers. Around the edges, tilting rails were added to make the angle of the LED modules adjustable. As with many other Ambilight clones, [Garrett] uses the boblight software to drive his system and we appreciate it that he included his configuration file for reference. Once up and running the effect is breathtaking (and possibly blinding).

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Halloween Time Machine Simulator Built Into An Outhouse

October 26, 2011 by Mike Szczys 24 Comments

[Sam] is an avid Halloween builder and has been hard at work on a time-machine simulator for this year’s festivities (alternate link). He recently assembled the enclosure which is seen above. It’s got room for two riders who will be strapped in place, with plenty of interior items to keep them occupied. There will be three LCD monitors acting as front and side windows for the time machine.

In the video after the break (taken from his vblog on the page linked above) [Sam] walks us through all of the electronics that went into this. He’s got red lights controlled by a servo motor attached to a dimmer switch. There’s a vibrating seat to give the riders a jolt, and a control panel which shows the status of the time machine. The thing is, it’s not just the physical build that’s impressive. We know from his past projects that [Sam] is a showman and he doesn’t disappoint this year. He spent a lot of time filming and generating computer graphics and sound to really make the ride a multimedia odyssey.

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Custom Flat Cables To Suit Your Needs

October 26, 2011 by Mike Szczys 17 Comments

[Cosimo Orlando] has a Motorola Xoom tablet. It’s an Android device that works great as a tablet, but can double as a Laptop when you need it to by adding a keyboard. The problem he was having is that the USB On-The-Go cables that he tried were never the right size or orientation. So he scavenged them for parts and built his own flat cable for a custom fit.

The final product pictured here actually uses protoboard to give the body some strength. [Cosimo] first laid out the dimensions on the substrate using a felt-tipped pen. He then took connectors from his mis-sized commercial cables and affixed them to the board with a combination of hot glue and solder. From there, just connect the five data lines and ground with some jumper wire and test for continuity. He finished this off with what he calls ‘adhesive plastic glossy black’ shaped to make a decent looking case. If you have any idea what product was used here, let us know by leaving a comment.

Halloween Hacks: Terrifying Mask Follows You Everywhere

October 26, 2011 by Brian Benchoff 2 Comments

It’s less than 5 days away from Halloween and the projects to scare small children are pouring in. [Noel] sent in his robotic Halloween mask he’s been working on, and the only way his build could be any better is by placing it underneath a child’s bed.

[Noel] took the mask he used last year and stuffed a few styrofoam craft balls inside to ‘fill it up.’ Two LEDs and a PIR sensor were fitted into the eyes of the mask and a few more electronics added to the brain. A servo was fitted to the base of the project to turn the head left and right.

The build uses a Gizduino Arduino clone with an Adafruit Wave shield. After a little bit of wiring up the LEDs, PIR sensor and neck servo, [Noel] had a bit of coding ahead of him. He ran into a problem with the WaveHC and Servo libraries because they both used the same timer. After finding a another software-based servo libraries, he had a reasonably terrifying project to put in front of a bowl of candy.

Check out the video below for a demo of [Noel]’s work.

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