Comments for eclecticc

Comment on Reverse Engineering the Lytro .LFP File Format by Joe

Joe — Sun, 13 May 2012 15:01:01 +0000

Thank you for all the great work you’ve put into this! I haven’t been able to get a camera yet, but I’ve been using your lfpsplitter tool to examine the IMG0004.lfp image that you posted. Would it be possible for you to post the IMG0004-stk.lfp version as well? As far as I understand, it is not trivial to create that from the IMG0004.lfp without my having the proprietary software.

Comment on Snow Globe and the Adjacent Reality Tracker by samy

samy — Fri, 11 May 2012 11:02:47 +0000

Brilliant, the tricky part is the position sensing and processing circuity. This can have vast applications, from space, to artificial human limbs, to robotics. neat indeed. if i was bill gates, I wud send u some funds to help go further on this; it is R&D people who shape the future. God bless u.

Comment on HMC5843 Magnetometer Library for Arduino by Trójosiowy czujnik pola magnetycznego HMC5843 – Arduino | YWD - blog

Trójosiowy czujnik pola magnetycznego HMC5843 – Arduino | YWD - blog — Thu, 10 May 2012 06:54:07 +0000

[...] A pod tym adresem znajdziecie bibliotekę i przykłady wykorzystania z Arduino – LINK [...]

Comment on Snow Globe and the Adjacent Reality Tracker by mark

mark — Wed, 09 May 2012 23:13:46 +0000

Just brilliant dude.

Comment on Satellites on a Snow Globe Spherical Display by 3D sphere display and controller - Hack a Day

3D sphere display and controller - Hack a Day — Wed, 09 May 2012 19:02:34 +0000

[...] that gets very close to futuristic sci-fi displays. At least now, [Nirav] can interact with the awesome satellite tracking app and continental drift simulation he [...]

Comment on Snow Globe and the Adjacent Reality Tracker by 3D sphere display and controller - Hack a Day

3D sphere display and controller - Hack a Day — Wed, 09 May 2012 19:02:18 +0000

[...] display for about a year now, and he just came up with a great way of interacting with this screen: an adjacent reality tracker that rotates the display to match the current orientation of the [...]

Comment on Snow Globe and the Adjacent Reality Tracker by MAKE | Inertial Control Orb for Desktop Spherical Display

MAKE | Inertial Control Orb for Desktop Spherical Display — Wed, 09 May 2012 13:02:39 +0000

[...] Snow Globe and the Adjacent Reality Tracker [...]

Comment on Snow Globe: Part One, Cheap DIY Spherical Projection by Lensmount STL file for Opteka Fisheye Lens & Microvision show-wx laser projector — Jay’s Technical Talk

Tue, 08 May 2012 16:59:23 +0000

[...] a Opteka fisheye lens, and a frosted glass globe for a spherical display system first described here using OpenSCAD. The OpenSCAD file is here. I went through the trouble of installing OpenSCAD and [...]

Comment on Reverse Engineering the Lytro .LFP File Format by nrp

nrp — Wed, 02 May 2012 21:00:22 +0000

Correct. The number of jpgs the camera or Lytro desktop software generates depends on some algorithm that probably involves doing graph cuts to find as many useful unique focal planes as there are in the image and generating a jpg at each one.

Comment on Reverse Engineering the Lytro .LFP File Format by Andras Frenyo

Andras Frenyo — Wed, 02 May 2012 20:27:03 +0000

I see. Managed to get the .jpg files from an .lfp; thanks.

If I understand correctly (also see http://nirmalpatel.com/hacks/lytro.html), closely matching the focal values for each jpg (from the .json file) to a value in the depth.txt, you can pinpoint the area to a 54x54px square, where the corresponding .jpg is at best focus. The depth.txt being a flat 2d array of the 20×20 values, a division into the matching value’s line number (in depth.txt) can give you your row and column, so you could calculate the pixel coordinates of the focus area, as it relates to the 1080×1080 image. This would need be the clickable region to call that jpg, etc. This should make it possible to build a lytro server independent html5 viewer.

This one kinda works (with a rudimentary 4×4 clickable grid, instead), just as an html5 proof of concept, at least in safari and chrome. http://panoramablog.com/lytro/keyboard

Question:
So the camera decides how many jpg files to generate for the .flp file from the RAW data? The most .jpg files I have seen in any of the .flp files is 12.

Thanks again.