[work] working with Canon 5D

I have an old Dell workstation.

I connected the 5D to the PC using USB.

I tried the slots on the back.

An error incured.
"No camera detected"
"not compatible"

I tried one slot in the front.
Failed again.
I reinstalled all the softwares.
Failed again.

I switched to another USB slot in the front.
There are totally two slots.

The error information changed.

I switched to using the EOS utility.

I succeeded!

[Language] love Wikipedia or Encyclopedia

I become very interested in reading the explanations in Wikipedia.
They are so concise and clear.
They are good examples for learning tell stories in English with clarity.

[Work] How to model asperity scattering

J. Koenderink and S. Pont. The secret of velvety skin. Mach. Vision Apppl. 2003

[IDEA] random modulation

In the paper Modulated Phase-Shifting, we have problem with really high frequency pattern to be projected. I means the Morrie-like pattern.

How about using random modulation?
Modulate the pattern with random pattern and its complementary.

The idea is from dithering.


spatial and temporal dithering for direct/global component separation and 3D scanning of translucent objects

frequency analysis (projected onto a diffuse white/gray screen)

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High speed camera

DLP　ｐｒｏｊｅｃｔｏｒ

How to conquer these two problems?
- finite resolution of the camera and projector
- narrow depth of field of the projector

A future avenue of research is to design 2D spatial intensity patterns that create temporal dithering codes that are optimal for the task at hand.

TODO:
find a collaborator

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Ｓ．Ｇ．　Ｎａｒａｓｉｍｈａｎ，　Ｓ．　Ｊ．　Ｋｏｐｐａｌ, and S. Yamazaki. Temporal Dithering of Illumination for Fast Active Vision. ECCV 2008

[work] high speed light

applications of high speed light


***NOTE***
The projector is fast.
The human eyes are slow.

2. Fast range scanning

3. Real-time geometrically corrected projection on deforming surfaces

4. Encoded light for the tracking, tagging and control of a robotic swarm

5. Multiple coincident personal views with camouflage layer

Twenty-four images were displayed at a 60 Hz rate to provide multiple, seemingly simultaneous
views on a single display surface. Viewers used time-encoded shutter glasses to see person-specific views. This was first tested with multiple stereoscopic views. It was then tested with negative
and camouflage images that allowed a view visible without shutter glasses, along with multiple seemingly invisible views. This could be used to create a secure information display.


*** NOTE***
A fast light cinema, where multiple films are displayed parallel on the same screen
and the audiences wear different glasses to watch their own favorites.


6. Very high resolution display

A shuttered array of lenses may be used to optically produce multiple copies of an image.
Each lens in the array can then be shuttered to be synchronized with a sequential series of images projected from the Mule. In this way, a very high resolution image can be produced with a correspondingly reduced bit depth.