Resolution, Noise, Dynamic Range

Resolution, Noise, Dynamic Range | Image Sensing

Рет қаралды 35,860

Күн бұрын

First Principles of Computer Vision is a lecture series presented by Shree Nayar who is faculty in the Computer Science Department, School of Engineering and Applied Sciences, Columbia University. Computer Vision is the enterprise of building machines that “see.” This series focuses on the physical and mathematical underpinnings of vision and has been designed for students, practitioners, and enthusiasts who have no prior knowledge of computer vision.

Пікірлер: 20

@konradwelz8752 Жыл бұрын

This is a totally stunning series on digital imaging. Beautifully paced, clearly articulated, and excellently illustrated. Thank you for making these.

@yubakrarai Жыл бұрын

Very well explained ! thank you

@alessiostefanelli5663 3 жыл бұрын

Great material !

@christianbauermeister6266 2 жыл бұрын

thanks! very interesting and well explained👍

@nasifmdtanjim 9 ай бұрын

Absolutely amazing content. Thanks 🙏

@atulmathur8486 Жыл бұрын

Good work Sir

@SuperGenitalz 2 жыл бұрын

Solid!

@sakirkandemir9657 Жыл бұрын

''' THANKS ...SUPERRRRRRRR.....!

@kendiato8714 Жыл бұрын

thank you very much!

@drantsplants Жыл бұрын

Variance of noise is Delta^2/12 @8:40

@user-bv5eu3zk5w Жыл бұрын

Regarding the dynamic range definition In electronics,when comparing voltage we use 20log(*) & when comparing power we use 10log(*) Why in image processing the dynamic range of energy comparison is using 20log(*) & not 10log(*)?

@Hanniballectraa Жыл бұрын

I had a question:Given that Bmax is the filling up of a potential well, wouldn't that be based on the material being used as the sensor? Then, how can the amount of exposure time possible for a frame in a video determine a low dynamic range of the sensor?

@ahmedreda8333 2 жыл бұрын

Around min 8:42, I think the variance of the quantization noise is delta squared over 12 (not delta/12).

@brunolec 2 жыл бұрын

no, this is correct

@vgikovecable 3 ай бұрын

How does the size of the matrix affect the dynamic range?

@renyvincent4406 Жыл бұрын

Var should be (Delta*Delta) / 12

@derekthompson2301 2 жыл бұрын

do we have to understand digital processing or something in order to understand this ? it's confusing and I feel like he skipped some important concepts

@km-sc4kz Жыл бұрын

in the parts about shot noise, and how photons arrive at random intervals- the poisson distribution comes up. i don't know what proof we have that it follows such a distribution. but assuming that is true, to understand the noise in the signal due to such a process- you should look into the mathematics of arrival processes, bernoulli random processes and poisson random processes.