Light, dark and clear

[rpenner]

Motion blur happens in machines because the projected motion during the time the shutter is open on the imaging plane is large compared to focus/image grain/ccd pixel size. This breaks the 1-to-1 correspondence between surfaces of objects and their images which sharp pictures have.

Motion blur happens in human perception because human brains have nonlinear processing of images on their way from sensory reception to image interpretation. Cartoon animation squash and stretch attempt to speak in the idiom of this internal wiring.

 

[Kittamaru]

Why looking out of car side window at speed does the view then seem blur?

Sorry, I was editing my post to explain:


Unless you are traveling a significant fraction of light speed, you are NOT noticing "motion blur" because of any "timing offset of the light"...

Motion blur is caused by our eyes ability to perceive only a limited number of frames (read, images) per second... and the brains ability to decode fewer still.

Here's an experiment to try - have your wife/son/daughter/whomever stand in front of you. Turn your head and twist at the waist all the way to the left so you cannot see them, and have them hold their hand up with a random number of fingers extended.

Turn your head and wasit as QUICKLY as you can to the right - see if you can accurately tell how many fingers are raised.

Take it a step further - if you have a long street, put your car at one end of the street. Have someone in the middle of the length of road, with an object on either side of them, so you can only see them for a moment as you drive by.

Have someone drive the car past them at, say, 60-75 MPH while they hold up a random number of fingers from both hands.

See how accurate you are at judging how many fingers are held up.

 

[billvon]

Why looking out of car side window at speed does the view then seem blur?

Because your eyes are not infinitely fast. If you used a camera with a fast shutter speed it would not blur.

 

[theorist-constant12345]

Motion blur happens in machines because the projected motion during the time the shutter is open on the imaging plane is large compared to focus/image grain/ccd pixel size. This breaks the 1-to-1 correspondence between surfaces of objects and their images which sharp pictures have.

Motion blur happens in human perception because human brains have nonlinear processing of images on their way from sensory reception to image interpretation. Cartoon animation squash and stretch attempt to speak in the idiom of this internal wiring.

You mean this -
''In signal processing, a nonlinear (or non-linear) filter is a filter whose output is not a linear function of its input. That is, if the filter outputs signals R and S for two input signals r and s separately, but does not always output αR + βS when the input is a linear combination αr + βs.

Both continuous-domain and discrete-domain filters may be nonlinear. A simple example of the former would be an electrical device whose output voltage R(t) at any moment is the square of the input voltage r(t); or which is the input clipped to a fixed range [a,b], namely R(t) = max(a, min(b, r(t))). An important example of the latter is the running-median filter, such that every output sample Ri is the median of the last three input samples ri, ri−1, ri−2. Like linear filters, nonlinear filters may be shift invariant or not.''

 

[theorist-constant12345]

Because your eyes are not infinitely fast. If you used a camera with a fast shutter speed it would not blur.

I said sight had a speed.

 

[Dr_Toad]

Why looking out of car side window at speed does the view then seem blur?

The drugs you're on, perhaps?

 

[rpenner]

You mean this -

No -- the key word was processing, not nonlinear.

Why would quote material you didn't understand? Nonlinear was just there to mean "not simple" in than human visual perception and recognition of objects is not trivial. Machine vision remains a real challenge in the field of AI.

I said sight had a speed.

The speed of human visual processing has nothing to do with the distance light travels to form an image and therefore nothing to do with very fast speed of light.

 

[theorist-constant12345]

Sorry, I was editing my post to explain:


Unless you are traveling a significant fraction of light speed, you are NOT noticing "motion blur" because of any "timing offset of the light"...

Motion blur is caused by our eyes ability to perceive only a limited number of frames (read, images) per second... and the brains ability to decode fewer still.

Here's an experiment to try - have your wife/son/daughter/whomever stand in front of you. Turn your head and twist at the waist all the way to the left so you cannot see them, and have them hold their hand up with a random number of fingers extended.

Turn your head and wasit as QUICKLY as you can to the right - see if you can accurately tell how many fingers are raised.

Take it a step further - if you have a long street, put your car at one end of the street. Have someone in the middle of the length of road, with an object on either side of them, so you can only see them for a moment as you drive by.

Have someone drive the car past them at, say, 60-75 MPH while they hold up a random number of fingers from both hands.

See how accurate you are at judging how many fingers are held up.

Yes it is pretty much has I thought with the exception of light residual of an object by motion being captured by camera?

 

[theorist-constant12345]

No -- the key word was processing, not nonlinear.

The speed of human visual processing has nothing to do with the distance light travels to form an image and therefore nothing to do with very fast speed of light.

Your brain does the work for sure.
The image you are looking at is on your eye ball?

 

[theorist-constant12345]

I had better explain, all matter that interacts with light emits a signal back through the light , a signal that is isotropic and expands with distance, in essence all matter is projected through the invisible light as invisible light.
This how a mirror is able to work, You are projected through the clear into the mirror receiver, where the mirror receiver then transmits you back at you.

 

[Daecon]

Please... just... stop trying to science.

You're really, really bad at it.

 

[theorist-constant12345]

Please... just... stop trying to science.

You're really, really bad at it.

I will get better at it one day , but for now how else do you think you get into a mirror and back to your eye again?

You travel through the energy.

 

[Daecon]

I will get better at it one day , but for now how else do you think you get into a mirror and back to your eye again?

You travel through the energy.

Is that supposed to make sense?

 

[Dywyddyr]

but for now how else do you think you get into a mirror and back to your eye again?

You don't.
That's that one answered.

You travel through the energy.

Nonsense.

 

[theorist-constant12345]

Is that supposed to make sense?

Well yes with the earlier post #270.

The ''clear'' you are standing in interacts with you , and you and your cloths interact back with the ''clear''.

You and your clothes are invisible emitted across space.

 

[theorist-constant12345]

You don't.
That's that one answered.


Nonsense.

nerr it is true

 

[Daecon]

your clothes are invisible emitted across space.

So does that mean I'm naked?

 

[theorist-constant12345]

So does that mean I'm naked?

Nope only your outer layer is transported through the clear, a sort of super imposed image that you can not see but witness now and again by motion blur.

x-rays make you naked.

 

[spidergoat]

Please tell your wife to smack you. Thanks.

 

[Dr_Toad]

God have mercy. The idea that TC has children is truly terrifying.

What would breed with it? That may be a worse thought...