Answering Photo Debunkery

Lately I've suffered a lot of big-word tellytubby talk trying to convince people that video is meaningless. The latest news is because video decimates Chrominence, this is something dreadful that makes video unreliable, so you shouldn't believe your eyes but listen to them instead because they know a lot of big words.

Digital video decimates chrominence because it is the aspect of analog video that carries hue information. Once television's signal has travelled thru the Aether and been projected, the job of chrominence is done. If it hangs around on a digital image, red and blue chrominence just create noize. There is even a very expensive program to filter out chrominence for high resolution digital camera images suffering noize problems.
http://www.camerabits.com/QM2.html

This is an image from the Pavel Hlava 9-11-03 video, broken down to show Chromimence and Luminance, two aspects of video decimated by digital compression.

Luminance, the "black and white television" part of a video signal,provides analog television with information on brightness and contrast. Once the image has been digitized into any of the 16 million colors of a digital pixel, the luminance is no longer relevant, merely an artifact of an analog past.


From:
Vision and Art - The Biology of Seeing by Margaret Livingstone Chapter 12: Television, Movies, and Computer Graphics

http://mbb.harvard.edu/evolution_of_mind_and_brain/chapter_12.pdf

"Three tiny electron beams (one for each color) sweep across the screen incredibly fast to activate the pixels. That is, an entire picture is never present at any instant; rather, a television “image” represents a temporal smearing of these moving beams. Each beam starts in the upper left corner of the screen and moves from left to right. Then it jumps back and steps downward a tiny bit and sweeps from left to right again, and again, until it has swept across all 525 rows of elements that make up the screen-all in one-thirtieth of a second. It’s sort of like taking a Fourth of July sparkler and moving it incredibly rapidly back and forth and up and down to get a square image. The three beams scan simultaneously, illuminating the rows in an alternating regular pattern called interlacing."

If a television image has been digitized at other than it's native size (the information in an American analog television video digitizes as a 352x240 pixel image) then interlacing becomes a problem. In areas of high movement, the second pass falls behind.

This image shows the effect of interlacing in a rapidly panning scene in a double-sized capture.

Making the scene visually coherent requires de-interlacing it. This means every other scan line is eliminated, with the replacement pixels being either drawn mathematically by analyzing the surviving neighbor pixels, or by duplicating the pixel information above or below. While half the unique pixels in the image below have been eliminated, compared to the image above, the overall coherency of the image is increased.

Since encoded noise weighs more than encoded imagery, deinterlacing this image brought this jpeg version down from 46K to 38k.

It is unfortunate that a television's "pixel" - a dot capable of red, green, blue or off, is confused with a digital pixel, a square of information given any of 16 million colors.

More:
http://thewebfairy.com/911/presentation

Pavel First Hit Resources:

Deinterlaced Version of the "Pavel First Hit" Footage
http://thewebfairy.com/911/pavel/newpavelhit.avi

My first attempts at rendering clear and reasonably sized Pavel footage:
http://thewebfairy.com/911/video/pavel.mpg
http://thewebfairy.com/911/video/pavel-deshaken.xvid.avi

Slideshow of all 1789 frames
http://thewebfairy.com/911/slideshow/pavel/

The Official Pavel Story
http://thewebfairy.com/911/pavel/officialstory.htm

Heavy Traffic
http://thewebfairy.com/911/pavel/traffic.htm

Answering Photo Debunkery
http://thewebfairy.com/911/pavel/presentation.htm

Terrorize.DK Version:
http://terrorize.dk/911/wtc1hit2/

My first look at the Pavel footage:
http://thewebfairy.com/911/newfirsthit

So-Called Alleged "Pavel" footage was SHOT FROM A FIRETRUCK
http://thewebfairy.com/911/pavel

Reflections:
http://thewebfairy.com/911/pavel/reflection1.htm
http://thewebfairy.com/911/pavel/reflection2.htm
http://thewebfairy.com/911/pavel/reflection3.htm

Webfairy 911 Memorial
http://thewebfairy.com/911