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larger gear:
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Attachments:
Download 'geartoothcount.png' (744 KB)
Preview of image 'geartoothcount.png'
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One thing I realized about this when contemplating further refinements, and
comparing and contrasting this method with the image-processing based method in
Mathematica, is that the heightfield-slice method gives very nice imperfect
gears that would be ideally suited for objects in scenes where the imperfections
are actually a desired attribute, since they avoid that perfect, "plastic,
computer-generated" look.
This would be a nice way to utilize photos of gears online for a scene.
Say, of and orrery, or the Antikythera mechanism....
:D
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On 6/8/2017 12:50 PM, Bald Eagle wrote:
> larger gear:
>
Hmm! I make it 193 teeth, counting on my fingers.
If there is a discrepancy it is about 240° clockwise from TDC.
--
Regards
Stephen
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On 6/8/2017 1:51 PM, Stephen wrote:
> On 6/8/2017 12:50 PM, Bald Eagle wrote:
>> larger gear:
>>
>
> Hmm! I make it 193 teeth, counting on my fingers.
> If there is a discrepancy it is about 240° clockwise from TDC.
>
>
Opps! I just read your first post.
I've worked out a method to count* them in blender. The angle between
the teeth is 1.865°. Which surprisingly works out at 360/193 ;)
* Count is too strong a word. Read number from screen is more like it. :)
--
Regards
Stephen
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Further development and analysis.
Might make some more headway over the weekend, if I have enough free round
tuits.
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Attachments:
Download 'geartoothcountgraph.png' (207 KB)
Preview of image 'geartoothcountgraph.png'
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On 6/9/2017 5:19 PM, Bald Eagle wrote:
> Further development and analysis.
>
> Might make some more headway over the weekend, if I have enough free round
> tuits.
>
That reminds me. A couple of months ago I started to design a "Square
Uptoit". Same family but more linear. ;)
I suspect that either the original photograph does not have a high
enough resolution or the conversion you are using is not good enough. Or
both. That is just looking at the images.
That aside it is an interesting project.
--
Regards
Stephen
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From: Thomas de Groot
Subject: Re: Counting gear teeth with POV-Ray
Date: 10 Jun 2017 03:06:01
Message: <593b9a59@news.povray.org>
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On 9-6-2017 18:45, Stephen wrote:
> On 6/9/2017 5:19 PM, Bald Eagle wrote:
>> Further development and analysis.
>>
>> Might make some more headway over the weekend, if I have enough free
>> round
>> tuits.
>>
>
> That reminds me. A couple of months ago I started to design a "Square
> Uptoit". Same family but more linear. ;)
>
> I suspect that either the original photograph does not have a high
> enough resolution or the conversion you are using is not good enough. Or
> both. That is just looking at the images.
I was wondering if Inkscape's ability to draw paths from images could
help here? Just a thought.
>
> That aside it is an interesting project.
>
Very.
--
Thomas
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On 6/10/2017 8:05 AM, Thomas de Groot wrote:
>
> I was wondering if Inkscape's ability to draw paths from images could
> help here? Just a thought.
A good thought. I've used it to convert a building's ground plan into a
heightfield. (I must go back to that project soon.)
--
Regards
Stephen
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From: Thomas de Groot
Subject: Re: Counting gear teeth with POV-Ray
Date: 10 Jun 2017 07:01:51
Message: <593bd19f@news.povray.org>
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On 10-6-2017 9:32, Stephen wrote:
> On 6/10/2017 8:05 AM, Thomas de Groot wrote:
>>
>> I was wondering if Inkscape's ability to draw paths from images could
>> help here? Just a thought.
>
> A good thought. I've used it to convert a building's ground plan into a
> heightfield. (I must go back to that project soon.)
>
Yes, that are the kind of things Inkscape does very well.
--
Thomas
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Thomas de Groot <tho### [at] degroot org> wrote:
> I was wondering if Inkscape's ability to draw paths from images could
> help here? Just a thought.
Well, it might. Though I'm not sure what the advantage is over tracing a
POV-Ray generated heightfield. I don't [currently] see how it gets me any
greater resolution, more reliable "sensing" or measuring, or more information
about the toothed edge of the gear.
But I do thank you for throwing the thought out there - they are always helpful
in some way, at some point.
Need to throw $1000 into my car, so I was busy with that over the weekend. :(
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