JFK Assassination Forum

JFK Assassination Discussion & Debate => JFK Assassination Discussion & Debate => Topic started by: Dillon Rankine on August 18, 2018, 05:29:35 PM

Title: Z-317 shows no rearward blowout
Post by: Dillon Rankine on August 18, 2018, 05:29:35 PM
Some (notably folks like Fetzer) have claimed that the nonexistence of a rearward blowout in Z317 proves the film was doctored, noting what they think is a ?black blob? on the rear of the head. Professor Hany Farid, author of a highly cited paper on detecting image forgery conducted a study using computational modelling* and demonstrated that the darkness manifest on the rear of the head is consistent with natural shadows, revealing no obvious lesion.

Read the paper, or review Fig. 7 on p. 8. https://www.cs.dartmouth.edu/farid/downloads/publications/tr10a.pdf (https://www.cs.dartmouth.edu/farid/downloads/publications/tr10a.pdf)

*For those who autonomically respond with ?Garbage In: Garbage Out,? note that this is academic paper and as such all values applied to the model and how they were determined can be found on pp. 2-6.
Title: Re: Z-317 shows no rearward blowout
Post by: Ray Mitcham on August 18, 2018, 06:33:57 PM
Some (notably folks like Fetzer) have claimed that the nonexistence of a rearward blowout in Z317 proves the film was doctored, noting what they think is a ?black blob? on the rear of the head. Professor Hany Farid, author of a highly cited paper on detecting image forgery conducted a study using computational modelling* and demonstrated that the darkness manifest on the rear of the head is consistent with natural shadows, revealing no obvious lesion.

Read the paper, or review Fig. 7 on p. 8. https://www.cs.dartmouth.edu/farid/downloads/publications/tr10a.pdf (https://www.cs.dartmouth.edu/farid/downloads/publications/tr10a.pdf)

*For those who autonomically respond with ?Garbage In: Garbage Out,? note that this is academic paper and as such all values applied to the model and how they were determined can be found on pp. 2-6.

Hary Farid did work for the gubermint. Enough said.
Title: Re: Z-317 shows no rearward blowout
Post by: Jerry Organ on August 18, 2018, 09:15:41 PM
Hary Farid did work for the gubermint. Enough said.

Who do you think paid Cyril Wecht for most of his career?
Title: Re: Z-317 shows no rearward blowout
Post by: Steve M. Galbraith on August 18, 2018, 09:32:14 PM
Hary Farid did work for the gubermint. Enough said.

Of course. I'm a lone nutter and I went to "gubermint" schools.

We're everywhere.

If you did work for THE GOVERNMENT at any time then obviously you're in cahoots with THEM.

Title: Re: Z-317 shows no rearward blowout
Post by: John Mytton on August 19, 2018, 11:57:31 PM
Hary Farid did work for the gubermint. Enough said.

Did you even look at his analysis, he didn't just say "Abracadabra" and come up with some biased paranoid conclusion(as above) but every step of his work is detailed and can be replicated by anybody to validate his results.

JohnM
Title: Re: Z-317 shows no rearward blowout
Post by: Ray Mitcham on August 21, 2018, 02:45:04 PM
Did you even look at his analysis, he didn't just say "Abracadabra" and come up with some biased paranoid conclusion(as above) but every step of his work is detailed and can be replicated by anybody to validate his results.

JohnM

Why did he study just one photo?

And his report  is  based on poor conclusions.
"Hany Farid report3.3. Posture
?It has been argued that Oswald is leaning so far to the left as to be physically implausible. Our 3-D model allows for arbitrary views of Oswald?s body and measurements of his posture. Shown in Figure 7 are four renderings of Oswald?s body taken from the front, back, and left and right sides, each of which look qualitatively reasonable. The tilt of Oswald?s body was measured to be a physically plausible five degrees from vertical.?

Only problem is Farid was measuring the tilt on a photo which itself was out of tilt. On correcting the tilt, the angle that Oswald is standing is nearer to be a physically implausible 10˚ from vertical NOT 5˚.
Title: Re: Z-317 shows no rearward blowout
Post by: Jerry Freeman on August 21, 2018, 07:23:10 PM
The frame in question---------------------------

(https://www.assassinationresearch.com/zfilm/z317.jpg)
Title: Re: Z-317 shows no rearward blowout
Post by: John Iacoletti on August 21, 2018, 08:49:52 PM
Why did he study just one photo?

And his report  is  based on poor conclusions.
"Hany Farid report3.3. Posture
?It has been argued that Oswald is leaning so far to the left as to be physically implausible. Our 3-D model allows for arbitrary views of Oswald?s body and measurements of his posture. Shown in Figure 7 are four renderings of Oswald?s body taken from the front, back, and left and right sides, each of which look qualitatively reasonable. The tilt of Oswald?s body was measured to be a physically plausible five degrees from vertical.?

Only problem is Farid was measuring the tilt on a photo which itself was out of tilt. On correcting the tilt, the angle that Oswald is standing is nearer to be a physically implausible 10˚ from vertical NOT 5˚.

"Look qualitatively reasonable".

How scientific.
Title: Re: Z-317 shows no rearward blowout
Post by: Barry Pollard on August 22, 2018, 02:10:13 AM
The frame in question---------------------------


"Where's Myers when we need him?"
(http://1.bp.blogspot.com/-2Auc4GVuR14/UgkTRbcNClI/AAAAAAAABt8/dsiGDVDdHjs/s1600/Farid+Figure+7.jpg)

The cashew shape that some think is evidence of the real rear blow-out.
(http://1.bp.blogspot.com/-86ShoH3qHOk/UgkaUVC1XCI/AAAAAAAABuM/QTeAB3Q4D-A/s1600/Frame+374+(Zapruder).jpg)
I think that would be his ear on the right, rather than the damage seen in earlier frames??
Title: Re: Z-317 shows no rearward blowout
Post by: John Mytton on August 24, 2018, 04:24:10 AM
Why did he study just one photo?

And his report  is  based on poor conclusions.
"Hany Farid report3.3. Posture
?It has been argued that Oswald is leaning so far to the left as to be physically implausible. Our 3-D model allows for arbitrary views of Oswald?s body and measurements of his posture. Shown in Figure 7 are four renderings of Oswald?s body taken from the front, back, and left and right sides, each of which look qualitatively reasonable. The tilt of Oswald?s body was measured to be a physically plausible five degrees from vertical.?

Only problem is Farid was measuring the tilt on a photo which itself was out of tilt. On correcting the tilt, the angle that Oswald is standing is nearer to be a physically implausible 10˚ from vertical NOT 5˚.

Quote
Only problem is Farid was measuring the tilt on a photo which itself was out of tilt. On correcting the tilt, the angle that Oswald is standing is nearer to be a physically implausible 10˚ from vertical NOT 5˚.

10˚ ?

Tell me Ray, how did you arrive at a physically implausible 10˚?

Btw I truly don't understand where all this goes, are you saying that when they took the photo of their "Oswald" that he was he was leaning on a post or maybe he was held up with skyhooks?

(https://s15.postimg.cc/opjonpedn/pose_nolines_zpssnpyvtou.jpg)

JohnM
Title: Re: Z-317 shows no rearward blowout
Post by: John Iacoletti on August 24, 2018, 03:53:41 PM
Is that a gouge I see in that umbrella?
Title: Re: Z-317 shows no rearward blowout
Post by: Jerry Organ on August 24, 2018, 05:38:58 PM

Only problem is Farid was measuring the tilt on a photo which itself was out of tilt. On correcting the tilt, the angle that Oswald is standing is nearer to be a physically implausible 10˚ from vertical NOT 5˚.

Looks like Ray goes to the Cakebread Correspondence School of Gut-Feel Analysis.

(http://i65.tinypic.com/34g1z84.jpg)

Let's just say I wouldn't want a CT plumbing my doors.
Title: Re: Z-317 shows no rearward blowout
Post by: Ray Mitcham on August 24, 2018, 05:57:30 PM
Looks like Ray goes to the Cakebread Correspondence School of Gut-Feel Analysis.

(http://i65.tinypic.com/34g1z84.jpg)

Let's just say I wouldn't want a CT plumbing my doors.

Maybe you should plumb your photo first, Jerry.
Title: Re: Z-317 shows no rearward blowout
Post by: Jerry Organ on August 24, 2018, 06:17:43 PM
Maybe you should plumb your photo first, Jerry.

Why? The area behind where Oswald is standing happens to be the most-true-to-vertical part of the 133A photo.

How about producing some graphics of your own? Gut feelings and vague hunches aren't that measurable.
Title: Re: Z-317 shows no rearward blowout
Post by: Ray Mitcham on August 24, 2018, 06:36:04 PM
Why? The area behind where Oswald is standing happens to be the most-true-to-vertical part of the 133A photo.

How about producing some graphics of your own? Gut feelings and vague hunches aren't that measurable.

(https://s19.postimg.cc/kz1qecfnz/Jerry_Oswald.png) (https://postimg.cc/image/kz1qecfnz/)
Title: Re: Z-317 shows no rearward blowout
Post by: Ray Mitcham on August 24, 2018, 06:56:13 PM
The Oswald tilt article by Farid:

https://www.cs.dartmouth.edu/farid/downloads/publications/jdfsl15.pdf

Thanks Tom. Note the difference in the vertical angle of the stair post in the Farid photo and the one submitted by Jerry.
Title: Re: Z-317 shows no rearward blowout
Post by: Ray Mitcham on August 24, 2018, 07:02:13 PM
What's holding up the guy to the right... ???

Note the difference in the angle his right foot is sticking out to Oswald.
Title: Re: Z-317 shows no rearward blowout
Post by: Jerry Organ on August 24, 2018, 07:33:06 PM
(https://s19.postimg.cc/kz1qecfnz/Jerry_Oswald.png) (https://postimg.cc/image/kz1qecfnz/)

(http://i68.tinypic.com/2psrivk.jpg)

Adjusted image so the post over his left shoulder is true-vertical. But it makes the post behind his head go off-vertical.

BTW, the angle in your graphic is 7?, not 10?.
Title: Re: Z-317 shows no rearward blowout
Post by: Jerry Organ on August 25, 2018, 02:46:31 AM
(http://i68.tinypic.com/b4at00.jpg)

Craig Lamson's graphic showing a 7? tilt when the perspective is corrected. True-verticals were found by Craig on the house, the post behind the left shoulder and the vertical on the far-right of the shed. Other verticals in the picture were not unreliable, including the rough carpentry of the stairway support post, the gate and most of the shed.
Title: Re: Z-317 shows no rearward blowout
Post by: John Iacoletti on August 25, 2018, 06:50:40 PM
Craig Lamson's graphic showing a 7? tilt when the perspective is corrected. True-verticals were found by Craig on the house, the post behind the left shoulder and the vertical on the far-right of the shed.

Interesting.  I know Craig still lurks here.  How was it determined that these are true verticals?  PM is fine.
Title: Re: Z-317 shows no rearward blowout
Post by: Jerry Organ on August 25, 2018, 07:18:51 PM
Interesting.  I know Craig still lurks here.  How was it determined that these are true verticals?  PM is fine.
I believe he worked off the assumption that the house verticals were the most accurate.
Title: Re: Z-317 shows no rearward blowout
Post by: Ray Mitcham on August 26, 2018, 06:00:57 PM
Glad to see that Lamson agrees with me  that Farid was wrong when he said Oswald was leaning at 5˚. If he was wrong in this, then why take his word on his comments on the nose shadows?
Title: Re: Z-317 shows no rearward blowout
Post by: Jerry Organ on August 26, 2018, 07:50:33 PM
Glad to see that Lamson agrees with me  that Farid was wrong when he said Oswald was leaning at 5˚. If he was wrong in this, then why take his word on his comments on the nose shadows?

As far as I know, Lamson never said he disagreed with Farid. He has told me he disagrees with 10˚, which was your figure and for which you have yet to provide a graphic justification.

Let's not forget that in 133A, Oswald's left side is closer to the camera than the right. This would contribute, I would think, some perspective distortion to an angle of tilt.

(http://i66.tinypic.com/1zqc6zq.jpg)

Farid's model (when shown more true-on) seems to show a 5˚ tilt.
Title: Re: Z-317 shows no rearward blowout
Post by: Ray Mitcham on August 27, 2018, 12:20:40 PM
As far as I know, Lamson never said he disagreed with Farid. He has told me he disagrees with 10˚, which was your figure and for which you have yet to provide a graphic justification.

Let's not forget that in 133A, Oswald's left side is closer to the camera than the right. This would contribute, I would think, some perspective distortion to an angle of tilt.



Farid's model (when shown more true-on) seems to show a 5˚ tilt.

The world's greatest photographer (IHOO) says that Oswald was leaning at a greater angle the  Farid said, so by default he is disagreeing with Farid. Whether ia m correct or not is immaterial. A lone nutter has agreed  that the so called expert, Farid, was wrong, which is  what I have said all along.
Title: Re: Z-317 shows no rearward blowout
Post by: Jerry Organ on August 27, 2018, 05:02:47 PM
The world's greatest photographer (IHOO) says that Oswald was leaning at a greater angle the  Farid said, so by default he is disagreeing with Farid. Whether ia m correct or not is immaterial. A lone nutter has agreed  that the so called expert, Farid, was wrong, which is  what I have said all along.

Rather than check out what I said in my previous post about perspective possibly being a factor, you would rather promote a false narrative that Lamson and Craig are in disagreement.

And bask in the self-illusion that you're smarter than them all.
Title: Re: Z-317 shows no rearward blowout
Post by: Ray Mitcham on August 27, 2018, 05:20:02 PM
Rather than check out what I said in my previous post about perspective possibly being a factor, you would rather promote a false narrative that Lamson and Craig are in disagreement.

Farid says that Oswald was leaning at an angle of 5˚. Lamson says 7˚. Only to a lone nutter would this mean that they don't disagree about the angle of lean.


Quote

And bask in the self-illusion that you're smarter than them all.

Not at all. Just pointing out that Farid was not infallible. Maybe you believe you are.
Title: Re: Z-317 shows no rearward blowout
Post by: Jerry Organ on August 27, 2018, 05:40:47 PM
Farid says that Oswald was leaning at an angle of 5˚. Lamson says 7˚. Only to a lone nutter would this mean that they don't disagree about the angle of lean.


In other words, nothing I said about perspective being a factor sunk in? Of course not.

And they call LNers "incurious."

(http://i66.tinypic.com/zu2o3q.jpg)
Title: Re: Z-317 shows no rearward blowout
Post by: John Iacoletti on August 28, 2018, 12:37:53 AM
Rather than check out what I said in my previous post about perspective possibly being a factor, you would rather promote a false narrative that Lamson and Craig are in disagreement.

Lamson and Craig are the same person.
Title: Re: Z-317 shows no rearward blowout
Post by: Ray Mitcham on August 28, 2018, 11:49:15 AM
Lamson and Craig are the same person.

Lamson and Craig regularly disagree with each other. They are both very disagreeable. :D
Title: Re: Z-317 shows no rearward blowout
Post by: Jerry Organ on August 28, 2018, 06:57:06 PM
Lamson and Craig regularly disagree with each other. They are both very disagreeable. :D

Hey, Ray. How's that Mitcham fellow -- who talked something about 10˚ -- doing these days? ::)

Title: Re: Z-317 shows no rearward blowout
Post by: Ray Mitcham on August 29, 2018, 11:41:55 AM
Hey, Ray. How's that Mitcham fellow -- who talked something about 10˚ -- doing these days? ::)

He's fine Jerry. How's that guy, Organ, who believes in the daft single bullet theory doing?
Title: Re: Z-317 shows no rearward blowout
Post by: Jerry Organ on August 29, 2018, 12:57:22 PM
He's fine Jerry. How's that guy, Organ, who believes in the daft single bullet theory doing?

Still tooting the "physically implausible" horn. And the experts got it wrong.
Title: Re: Z-317 shows no rearward blowout
Post by: Ray Mitcham on August 29, 2018, 01:07:03 PM
Still tooting the "physically implausible" horn. And the experts got it wrong.

The only expert who got it wrong was Farid. Proven by your fellow Lone nutter.
Title: Re: Z-317 shows no rearward blowout
Post by: Jerry Organ on August 29, 2018, 05:16:27 PM
The only expert who got it wrong was Farid.

Now how is Farid's 5˚ tilt of the model in orthographic-view wrong? And the same model in camera-view with perspective showing 7˚ tilt wrong?
(http://i62.tinypic.com/1z6tj5c.jpg)
(https://upload.wikimedia.org/wikipedia/commons/1/14/Blank300.png)(https://upload.wikimedia.org/wikipedia/commons/1/14/Blank300.png)
(https://upload.wikimedia.org/wikipedia/commons/1/14/Blank300.png)(https://upload.wikimedia.org/wikipedia/commons/1/14/Blank300.png)
Hint: Both are correct
(https://upload.wikimedia.org/wikipedia/commons/1/14/Blank300.png)(https://upload.wikimedia.org/wikipedia/commons/1/14/Blank300.png)
Quote
Proven by your fellow Lone nutter.


Craig ... he ain't gonna like that.

(https://media.giphy.com/media/JNlsaznc9vPAA/giphy.gif)