[x3d-public] X3D Resources Examples. Basic/UniversalMediaMaterials images are monochrome

[Leonard Daly]

On 9/5/2016 8:22 AM, Roy Walmsley wrote:
>
> Leonard,
>
> Sorry if I didn’t make it clear. My attached images are generated 
> using my own Coin3D based viewer. The images on the web site we are 
> comparing against are:
>
> http://www.web3d.org/x3d/content/examples/Basic/UniversalMediaMaterials/viewpointSlideshow.html
>
> In all there are 547 viewpoint images listed, all appearing to be 
> monochrome.
>

OK, understand now. I looked at one 
(http://www.web3d.org/x3d/content/examples/Basic/UniversalMediaMaterials/_viewpoints/ArtDecoExamples.x3d._VP_Close_Front.png) 
It has four different pixel values. The file does report that the pixel 
bit depth is 32. It appears that this is more of an image mask than a 
screen capture. Another reason for suspecting a mask is that the shinny 
examples (e.g., Metals or Glass) should have various light to dark 
regions due to reflectance and shadow. I do not see anything like that.


Leonard Daly




> Roy
>
> *From:*x3d-public [mailto:x3d-public-bounces at web3d.org] *On Behalf Of 
> *Leonard Daly
> *Sent:* 05 September 2016 16:17
> *To:* x3d-public at web3d.org
> *Subject:* Re: [x3d-public] X3D Resources Examples. 
> Basic/UniversalMediaMaterials images are monochrome
>
> John,
>
> Roy's attached images show in color for me. I am using Thunderbird for 
> preview and GIMP for manipulation. The bottom checkerboard plane  is 
> light & dark gray with text in white. The sphere's show in color with 
> highlights. If Roy's images are not what you see, please send URLs to 
> the pages & images in question.
>
>
> Leonard Daly
>
>
>     John,
>
>     The 3D models do have colour. I  don’t know if they were captured
>     as monochrome to save disk space. Each thumbnail file is a PNG
>     file,  with a resolution of 128x128 and a bit depth of 32. The
>     first attached image is from ArtDecoExamples.x3d, Low Right
>     Viewpoint at the same resolution settings.
>
>     The viewpoint images on the web site are also all monochrome. The
>     resolution is 792x465 with a bit depth of 32. The Second attached
>     image is the same settings, using the same example and viewpoint
>     as the first. This latter image is 95kb. The one on the web site
>     is only 12kb.
>
>     Don should be able to provide more info …
>
>     Roy
>
>     *From:*x3d-public [mailto:x3d-public-bounces at web3d.org] *On Behalf
>     Of *John Carlson
>     *Sent:* 05 September 2016 13:16
>     *To:* X3D Graphics public mailing list <x3d-public at web3d.org>
>     <mailto:x3d-public at web3d.org>
>     *Subject:* [x3d-public] X3D Resources Examples.
>     Basic/UniversalMediaMaterials images are monochrome
>
>     Another thing I forgot to mention was that the
>     Basic/UniversalMediaMaterials thumbnail images don’t show color. 
>     I think
>
>     they should.  Someone please check out the X3D Resources Examples
>     thumbnail images for accuracy.
>
>     John
>
>
>
>
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>
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>
> -- 
> *Leonard Daly*
> 3D Systems & Cloud Consultant
> X3D Co-Chair on Sabbatical
> LA ACM SIGGRAPH Chair
> President, Daly Realism - /Creating the Future/
>


-- 
*Leonard Daly*
3D Systems & Cloud Consultant
X3D Co-Chair on Sabbatical
LA ACM SIGGRAPH Chair
President, Daly Realism - /Creating the Future/
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