Invisible Flash Takes Night Photos Without the Burst of (Visible) Light

By Anna Maria Jakubek Posted 07.17.2009

Finally: a flash camera without all the usual problems. By using a flashbulb that emits ultraviolet and infrared light (neither of which the human eye can detect) instead of visible light, New York University's Dilip Krishnan and Rob Fergus have come up with dark photography that will neither blind your subject nor produce the unwanted glare of a harsh flash in the developed photo.

On their own, IR and UV exposures produce photos that have strange, unrealistic coloring. But Krishnan and Fergus have taken care of that as well. Their system processes IR and UV exposures into true color, by combining two photos taken in quick succession into a superior final image.

Comments

Post a Comment

Popular posts from this blog

VITZ “INSERT MAP CD” SOLUTION

Image
By   Moonis ( zaitron )   on   December 3, 2010 For those of you who have a JDM navigation system installed in their Toyota (vitz, belta, axio, etc) and get the following message on their navigation system “INSERT MAP CD”, i have the solution for you. All that the system needs is a boot CD that will bypass this message. After that you will be able to use most of the features of the system like controlling the treble/base, maintenance log, etc. Everything, apart from the actual GPS navigation will be activated (for that, you require a map file of Pakistan, which unfortunately isn’t available for any system apart from Garmin). Usually you can go to the market (audio stores) and pay Rs.500-2000 for them to unlock your system. Instructions: First thing you need to do is to know the model number of the system you have installed in your car, for eg, NDCN W55 etc. (Model number is usually written at the bottom right of the unit). After that, download the file from mega
Read more

Make ready your horses !

Image
Assalam o alaikum, I just wanted to share a thought that has come to my mind regarding war in which nuclear weapons could be used. I might be wrong in my perception but I just thought to share it and get valued opinions of the members. Quran says: "Tayyar rakho apni taqat aur apni quwwat aur zara-e-jang ke sath, takey HAIBAT tari ho jaey unke dilon per jo dushman hen Allah ke aur tumharey dushman" I have highlighted the word 'Haibat'. It means to strike terror into the hearts. Being a muslim it's our firm belief that every single word of Quran is full wisdom. Quran talks not about 'destruction' of the enemies. It does not say that we should be equiped with modern weaponary so that our enemy is 'Destroyed' by it. It says that we should be equiped so that we can strike terror into the hearts of our enemies. If we observe, this is exactly what has stopped India from attacking Pakistan on a number of occassions. E.g. After attac
Read more

Halal and Haram in Chocolates and Ice Creams

Image
HALAL & HARAM DIRECTORY O believers ! Eat of the good things that We have provided you with and give thanks to Allah. (2: 172) Though thorough research has gone into producing this guideline, it is by no means complete and only covers the common products as it is very difficult to obtain exactly the listing of halal and haram ingredients present in all products. Also, companies are constantly changing their product ingredients and Muslims should always be aware that what is originally certified halal might in the future be haram and vice versa. Due to aggressive campaigning by The Vegetarian Society, UK, most products now display their symbol ‘Suitable For Vegetarians’ which means that there is NO animal content in that particular product, making it halal. However, a product can still contain alcohol, making it haram . Please check. Points to note: · Medicine containing alcohol is not permissible unless on authority of a doctor with no alternative med
Read more