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Overcoming light scattering: Single-pixel optical system uses compressive sensing to see deeper inside tissue

Overcoming light scattering: Single-pixel optical system uses compressive sensing to see deeper inside tissue | Through the Lens | Scoop.it

Optical imaging methods are rapidly becoming essential tools in biomedical science because they're noninvasive, fast, cost-efficient and pose no health risks since they don't use ionizing radiation. These methods could become even more valuable if researchers could find a way for optical light to penetrate all the way through the body's tissues. With today's technology, even passing through a fraction of an inch of skin is enough to scatter the light and scramble the image.

Now a team of researchers from Spain's Jaume I University (UJI) and the University of València has developed a single-pixel optical system based on compressive sensing that can overcome the fundamental limitations imposed by this scattering. The work was published today in The Optical Society's (OSA) open-access journal Optics Express.

 

"In the diagnostic realm within the past few years, we've witnessed the way optical imaging has helped clinicians detect and evaluate suspicious lesions," said Jesús Lancis, the paper's co-author and a researcher in the Photonics Research Group at UJI. "The elephant in the room, however, is the question of the short penetration depth of light within tissue compared to ultrasound or x-ray technologies. Current knowledge is insufficient for early detection of small lesions located deeper than a millimeter beneath the surface of the mucosa." "Our goal is to see deeper inside tissue," he added.


To achieve this, the team used an off-the-shelf digital micromirror array from a commercial video projector to create a set of microstructured light patterns that are sequentially superimposed onto a sample. They then measure the transmitted energy with a photodetector that can sense the presence or absence of light, but has no spatial resolution. Then they apply a signal processing technique called compressive sensing, which is used to compress large data files as they are measured. This allows them to reconstruct the image.

 

One of the most surprising aspects of the team's work is that they use essentially a single-pixel sensor to capture the images. While most people think that more pixels result in better image quality, there are some cases where this isn't true, Lancis said. In low-light imaging, for instance, it's better to integrate all available light into a single sensor. If the light is split into millions of pixels, each sensor receives a tiny fraction of light, creating noise and destroying the image.


Via Dr. Stefan Gruenwald
Donald Schwartz's insight:

At least a step in the other direction.

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Through the Lens
Composition, Lighting, Posing, Exposure, Photography and Video Production...Let's talk
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Digication e-Portfolio :: Erin McGinnis :: Compositional Techniques

Digication e-Portfolio :: Erin McGinnis :: Compositional Techniques | Through the Lens | Scoop.it
Digication e-Portfolio :: Erin McGinnis by Erin Mcginnis at NAEA.
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Forget a classroom in a book, try a classroom on a page.

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Bringing Focus to Your Images: 5 Hr Hands-on Lighting Workshop with Models

Bringing Focus to Your Images: 5 Hr Hands-on Lighting Workshop with Models | Through the Lens | Scoop.it
What's Going to Happen:

Five hours of slides, demos and instruction with live models


Free lunch


Three hours of playing with the demoed lighting instruments and model photography


What's This All About:
I'm a lighting freak which is why I spend so much time on lighting. Lighting along with composition, perspective, DOF, color and posing are all means of focusing the viewer's attention on what pictorial elements are most important to you, the photographer.
We will use live demos with mo
Donald Schwartz's insight:

This is my personal invitation for this Feb 15th workshop. I've always had an aversion to all slide show events so Studio210 and I thought we try something different. We're not just paying lip-service to hands on...

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Seán Duggan: Using Gray Targets for Night Photography

Seán Duggan: Using Gray Targets for Night Photography | Through the Lens | Scoop.it
Using a gray target such as the SpyderCUBE or the SpyderCHECKR 24 as a known reference for a neutral gray can be quite useful for correcting white balance
Donald Schwartz's insight:

Worth a shot, what do you think? Is it worth it?

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RØDE STUNS Filmmakers – Launches Stunning Wireless System, New Shotgun Mics

RØDE STUNS Filmmakers – Launches Stunning Wireless System, New Shotgun Mics | Through the Lens | Scoop.it

Microphone maker RØDE wowed a wildly cheering audience in a heavily-attended event in San Diego this evening with not one, not two, not three but four new products including the Australian company’s very first dip into the waves of wireless microphones.RØDE launched the amazing new RØDELink wire... http://blog.planet5d.com/2015/01/rode-stuns-filmmakers-launches-stunning-wireless-system-new-shotgun-mics/


Via planetMitch
Donald Schwartz's insight:

I really hate this sort of inflated copy--when was the last time you were stunned by a product announcement-- but if their products turn out to work and are less expensive, more power to Rode.

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Are You Equipment Obsessed? Do You Get Lens Envy?

Are You Equipment Obsessed?  Do You Get Lens Envy? | Through the Lens | Scoop.it
Can An Obsession with Equipment Get In The Way Of Creative Photography? We live in strangely dualistic times when it comes to photography. On the one hand, more and more people are taking perfectly acceptable pictures with smartphones, and wouldn’t know an aperture blade from a hole in the ground. At the other extreme, enthusiast photographers who want to get technical have never had it so good; full-frame SLRs are falling in price and although their lenses still cost a...

Via MyPhotoSchool
Donald Schwartz's insight:

Well, I don't get lens envy, but I do haul around a lot of "stuff" principally because I use mostly prime lenses.

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MyPhotoSchool's curator insight, January 21, 2:19 AM

If you are looking for a cure, look no further. Take 2 minutes to read this article and find out that technique and gear are a means to an end – i.e. creative pictures – not an end in themselves.

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DIY Boom Pole (The Crappie Boom is one of the best on YouTube) - YouTube

Welcome to the DIY Camera Guy Channel Don't let the name fool you, The Crappie Boom Pole is one of the best quality DIY Boom Pole Projects on YouTube. It is ...
Donald Schwartz's insight:

Hey, this appears to work except it would be nice if you could thread the XLR through the inside of the pipe.

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History Buff, Buy Our Movie: Indie Film Team Tries the Direct Approach

History Buff, Buy Our Movie: Indie Film Team Tries the Direct Approach | Through the Lens | Scoop.it
A new film set in World War II, “Against the Sun,” is marketing itself in a way Hollywood has been slow to embrace: targeted digital sales to narrowly defined purchaser pools.
Donald Schwartz's insight:

"It then became a question of penetrating digital social networks that bind the likeliest buyers..." What do you do with a marketing budget of $2 million plus. 

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Festival Screening Course

Festival Screening Course | Through the Lens | Scoop.it
Sunday 1st February 2015 - Places Avalable
Donald Schwartz's insight:

I don't know if there's anything here, but let me know if there's anything to this that's useful.

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Posing Guide: 21 Sample Poses to Get You Started with Photographing Women – Part I - Digital Photography School

Posing Guide: 21 Sample Poses to Get You Started with Photographing Women – Part I - Digital Photography School | Through the Lens | Scoop.it
This is the first in a series of Posing Guide posts by Kaspars Grinvalds from Posing App See below for links to the full series of posing guides including for kids, men, couples, weddings and more. Check out our new Portrait Posing eBook and Portrait Posing Printables for more advice and posing ideas. If you …
Donald Schwartz's insight:

Triangles and body framing. Triangles and body framing.

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Studio 210 Lighting Seminar w. Donald Schwartz | Facebook

Studio 210 Lighting Seminar w. Donald Schwartz | Facebook | Through the Lens | Scoop.it
Donald Schwartz's insight:

Hi:

It's a workshop and shoot with models. Play with lighting instruments after the workshop is over. ds

The lighting instruments:

Westcott Spiderlite TD5 Fixture and softbox

Smith-Victor Flow-110 Dimmable Flouorescent 2-Lamp Bank With Barndoors

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Family
Salton Sea, California

Salton Sea is an amazingly bizarre place. If you…

Family<br/>Salton Sea, California<br/><br/>Salton Sea is an amazingly bizarre place. If you… | Through the Lens | Scoop.it
Family
Salton Sea, California

Salton Sea is an amazingly bizarre place. If you manage to make abstraction of the surrounding ruins, the factories, the… - Romain Guy – Google+
Donald Schwartz's insight:

I question if I can add any insight to this one other than center frame, lower third.


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Analyzing Light - How to Breakdown The Lighting Of A Photo - DIY Photography

Analyzing Light - How to Breakdown The Lighting Of A Photo - DIY Photography | Through the Lens | Scoop.it
Ever since I started photography I had a thing  for lighting. Nowadays, every time I see a picture, I can’t help it but to analyze and breakdown how it was lit. In this article I will share my analyzing process, step by step. I believe understanding light can make a huge improvement to any photographer’s work, and [...]
Donald Schwartz's insight:

I love deconstruction, similar to following a jazz theme among the group's musicians.

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How to Make a Pro Looking 'IceLight' for less than $30 - DIY Photography

How to Make a Pro Looking 'IceLight' for less than $30 - DIY Photography | Through the Lens | Scoop.it
The Ice Light by Westcott is a $450 light source that many photographers swear by. It is a powerful, variable LED light that can be hand held and gives a nice directional strip-like spread. Then again, it costs $450, which is no peanuts. If you are in the photography stage where you have more time [...]
Donald Schwartz's insight:

Hey, this sound too complicated, but can I really do this?

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STOCK - I Love Coffee On the Floor

STOCK - I Love Coffee On the Floor | Through the Lens | Scoop.it
Why is my head shaved? ----) You must read the RULES before using the stock. It's important! Vous devez lire les RÈGLEMENTS avant l'utilisation du stock. C'est très important! Can I get the Full Ve...
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Posing II: And she's only drinking coffee.

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STOCK - I Love Coffee Standing

STOCK - I Love Coffee Standing | Through the Lens | Scoop.it
Why is my head shaved? ----) http://lalunatique.deviantart.com/journal/I-am-bald-328675646 :bulletyellow: You must read the RULES before using the stock. It's important! :bulletyellow: Vous devez l...
Donald Schwartz's insight:

Posing: and she's only drinking coffee.

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5 Incredibly Cheap and Smooth DIY Camera Mounts for Inside or Outside of Your Car

5 Incredibly Cheap and Smooth DIY Camera Mounts for Inside or Outside of Your Car | Through the Lens | Scoop.it
Shooting a photo or video in a car can be rather difficult without a proper mount, and if you want to secure your camera outside the car, it can be just plain expensive. Luckily, there are tons of DIY camera mounts for both inside and outside your vehicle, and most of them are pretty cheap to make. Here are some of the best. Dashboard Base Plate and License Plate Mount MHN Productions came up with a dashboard base plate for shooting inside, and a license plate mount for more dramatic outside shots. For the dashboard mount, you'll need a piece of wood, four rubber feet, and a bolt. The
Donald Schwartz's insight:

I believe you could scale up a couple of these mounts.

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Corneal Imaging Photo Process Reveals the Hidden, Reflected 'World in an Eye'

Corneal Imaging Photo Process Reveals the Hidden, Reflected 'World in an Eye' | Through the Lens | Scoop.it
You can take some absolutely gorgeous photos using the natural reflection that appears in people's and animals' eyes. With the right angle and lighting, you can even see a detailed picture of what the subject was looking at when the photo was taken. Photo by Martin Cathrae The problem is that in order for this to work, the photo usually has to be taken under the right conditions and fairly close up. But researchers at Columbia University have found a way to change that with their "World in an Eye" project, which can extract the images reflected on eyes in photographs even when they aren't
Donald Schwartz's insight:

In your eye pal, not really there's much more in the eye than just a great catch light.

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How to Turn a Styrofoam Bowl into a DIY Beauty Dish for Your Camera's Flash

How to Turn a Styrofoam Bowl into a DIY Beauty Dish for Your Camera's Flash | Through the Lens | Scoop.it
A beauty dish is a device that redistributes the flash on your camera to make the lighting more flattering in portraits. It's called a "beauty dish" because it's used most commonly in fashion and beauty photography. Unless you're a fashion photographer, you probably don't need one very often, so why drop a bunch of money when you probably have everything you need to make this super simple DIY version by Kirsty Wiseman? All you'll need is two Styrofoam bowls, two toothpicks, a piece of aluminum f
Donald Schwartz's insight:

DIY fans your moment in the light has arrived.

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Modeling advice | Model Management

Modeling advice | Model Management | Through the Lens | Scoop.it
Model Management connects new faces and models with scouts, international model agencies and photographers
Donald Schwartz's insight:

And yet another list of links, but this time for models.

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studio lighting | softbox vs umbrella vs beauty dish - Clickin Moms

studio lighting | softbox vs umbrella vs beauty dish - Clickin Moms | Through the Lens | Scoop.it
Donald Schwartz's insight:

Watch the effect of different catch-light creating instruments in the eye--got to love it.

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15 Beautiful Urban Dance Images - Digital Photography School

15 Beautiful Urban Dance Images - Digital Photography School | Through the Lens | Scoop.it
*** by Dimitry Roulland on 500px I love it when a photographer works on shooting a project over time with a similar theme. One photographer I’ve followed lately who does that is Dimitry Roulland who has been working on a great series of photos of dancers and gymnasts in urban settings. UPDATE: check out part …
Donald Schwartz's insight:

Adds new meaning to juxtaposition.

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Images: Romain Laurent's Surreal GIFs

"One Loop Portrait a Week" is a series by New York based photographer Romain Laurent, that shows completely surreal animated portraits we would call GIFs
Donald Schwartz's insight:

If you can't see the result in your mind's eye, these combinations would not be possible.


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GH4 Tutorial Downscaling 4k Footage to 1080


Via Mario Pires
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Native handling of 4K files is no joke, this article might help out.

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DSLRs are Forever

DSLRs are Forever | Through the Lens | Scoop.it
Everybody seems to be very excited with the new rumours, now apparently confirmed, that Canon will have a new high-pixel count DSLR camera in 2015. Soon, it seems, if one can believe the translation(s) made around a single interview given recently by a high responsible figure from Canon. The same goes for Nikon. Should we be surprised?
Donald Schwartz's insight:

There will always be a place for DSLRs just as there will be for mirror-less cameras, but there are the limits of pixel sensor density  that both sensor sizes will have to face. Can you say "medium" format?

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Free portrait photography cropping guide | Digital Camera World

Free portrait photography cropping guide | Digital Camera World | Through the Lens | Scoop.it
Learn how to crop photos with this free photography cheat sheet guide to cropping portraits. Discover the parts of the body that can or shouldn't be cropped.
Donald Schwartz's insight:

If you have to lose something, here are the standards.

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Curated by Donald Schwartz
Tech Writer, Photog, Tech Coord http://t.co/RRLkoggy(past), Ed vid prod, U have answer ive question, Full-attention listener Jazz/Blues. . http://t.co/dmXsdIDK

Here you can set your text

Other Topics
Space Not the Final Frontier
Off World a Chance to Begin Again in a Golden Land of Opportunity - Propulsion, Navigation, Exploration
Stone Soup
"Some travelers come to a village, carrying nothing more than an empty cooking pot. Upon their arrival, the villagers are unwilling to share any of their food stores with the hungry travelers. Then the travelers go to a stream and fill the pot with water, drop a large stone in it, and place it over a fire. One of the villagers becomes curious and asks what they are doing?. The travelers answer that they are making "stone soup", which tastes wonderful, although it still needs a little bit of garnish to improve the flavor, which they are missing. The villager does not mind parting with a few carrots to help them out, so that gets added to the soup. Another villager walks by, inquiring about the pot, and the travelers again mention their stone soup which has not reached its full potential yet. The villager hands them a little bit of seasoning to help them out. More and more villagers walk by, each adding another ingredient. Finally, a delicious and nourishing pot of soup is enjoyed by all." Wikipedia

My added ingredients on a number of topics of personal interest.
Technology & Business - Acronyms, Buzz Words, Double Entendre, Euphemisms,Tired Phrases, Word Abuse
What's in and what's out what makes sense and what doesn't in the language of business and technology.
Through the Lens
Composition, Lighting, Posing, Exposure, Photography and Video Production...Let's talk