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line 8 Deprecated: Creation of dynamic property Yoast\WP\SEO\Surfaces\Classes_Surface::$container is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-content/plugins/wordpress-seo/src/surfaces/classes-surface.php on line 20 Deprecated: Creation of dynamic property Yoast\WP\SEO\Main::$classes is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-content/plugins/wordpress-seo/lib/abstract-main.php on line 65 Deprecated: Creation of dynamic property Yoast\WP\SEO\Context\Meta_Tags_Context::$page_type is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-content/plugins/wordpress-seo/src/presentations/abstract-presentation.php on line 43 Deprecated: Creation of dynamic property Yoast\WP\SEO\Presentations\Indexable_Term_Archive_Presentation::$pagination is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-content/plugins/wordpress-seo/src/presentations/archive-adjacent-trait.php on line 29 Deprecated: Creation of dynamic property Yoast\WP\SEO\Presentations\Indexable_Term_Archive_Presentation::$source is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-content/plugins/wordpress-seo/src/presentations/abstract-presentation.php on line 64 Deprecated: Creation of dynamic property Yoast\WP\SEO\Presentations\Indexable_Term_Archive_Presentation::$title is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-content/plugins/wordpress-seo/src/presentations/abstract-presentation.php on line 64 2018 Archives - crocdialer https://crocdialer.com computer/science/art Thu, 23 Jun 2022 08:08:22 +0000 en-US hourly 1 https://wordpress.org/?v=5.8.9 Bloccupy Revisited https://crocdialer.com/bloccupy-revisited/ Thu, 16 Aug 2018 14:33:50 +0000 Deprecated: Creation of dynamic property WP_Term::$cat_ID is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 378 Deprecated: Creation of dynamic property WP_Term::$category_count is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 379 Deprecated: Creation of dynamic property WP_Term::$category_description is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 380 Deprecated: Creation of dynamic property WP_Term::$cat_name is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 381 Deprecated: Creation of dynamic property WP_Term::$category_nicename is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 382 Deprecated: Creation of dynamic property WP_Term::$category_parent is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 383 http://crocdialer.com/?p=137 I recently updated <Bloccupy> it’s an interactive media installation with kinect/video input, which I built for Projektil, Zurich in 2015. It wouldn’t run anymore for various minor reasons. plain old code-rot and no devs around to prevent it. while getting rid of some dust and freshing it all up, I did a nice screencast I […]

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]]> I recently updated <Bloccupy>

it’s an interactive media installation with kinect/video input, which I built for Projektil, Zurich in 2015.

It wouldn’t run anymore for various minor reasons. plain old code-rot and no devs around to prevent it.

while getting rid of some dust and freshing it all up, I did a nice screencast I wanted to share 🙂

 

I also wanted to summarize the basic building blocks and concept used for Bloccupy.

As most graphics-related things I did in the past years, it relies on crossplattform C++ and OpenGL.

 

pin toy metaphor

 

The underlying metaphor for the concept is a pin-toy.

Like in other projects I really fancy the procedure of downsampling something close to the point where it becomes unrecognizable and exploring this borderland.

To achieve the blocky look and elevation behaviour I manipulated a simple array of points in 3D space.

Those are fed into a GLSL geometry-shader and transformed into cuboids.

As input we used a raw depth-camera image in combination with video-footage, the update of point positions is performed with a couple of OpenCL kernels.

The depth values and/or color information from video is mapped onto the elevation of the cuboids and their color.

The scene is shaded and lit with a couple of point-light sources, to be able to visualize the intricate details of the resulting geometry.

 

colormap

optionally a colomap can be applied to better highlight different elevations.

I used this one, called “hot iron”:

 

results

nothing more to add, enjoy this outtake from Carl Sagan’s Cosmos, rendered by the Bloccupy Engine.

 

hope you like it,

croc

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]]> KinskiGL now using Physically Based Rendering (PBR) https://crocdialer.com/kinskigl-now-using-physically-based-rendering-pbr/ https://crocdialer.com/kinskigl-now-using-physically-based-rendering-pbr/#respond Sat, 12 May 2018 12:30:42 +0000 Deprecated: Creation of dynamic property WP_Term::$cat_ID is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 378 Deprecated: Creation of dynamic property WP_Term::$category_count is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 379 Deprecated: Creation of dynamic property WP_Term::$category_description is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 380 Deprecated: Creation of dynamic property WP_Term::$cat_name is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 381 Deprecated: Creation of dynamic property WP_Term::$category_nicename is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 382 Deprecated: Creation of dynamic property WP_Term::$category_parent is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 383 http://crocdialer.com/?p=104 recently I invested some time to catch up with current state-of-the-art realtime rendering techniques. after digesting the siggraph 2013 course notes from Epic I started implementing a new material and lighting system within kinskiGL. helpful resources along the way were also the “Physics and Math of Shading” presentation by Naty Hoffman and “Realtime Rendering” by Tomas Akenine-Moeller. […]

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]]> recently I invested some time to catch up with current state-of-the-art realtime rendering techniques.

after digesting the siggraph 2013 course notes from Epic I started implementing a new material and lighting system within kinskiGL.

helpful resources along the way were also the “Physics and Math of Shading” presentation by Naty Hoffman and “Realtime Rendering” by Tomas Akenine-Moeller.

  • the new material uses a metal/roughness/ambient occlusion workflow, the lighting system was enhanced with support for Image based Lighting (IBL).
  • kinskiGL now reads .hdr radiance-HDR maps (provided as equi-rectangular panoramas or cubemaps) and uses those to replace the ambient term in the shading equation.
  • the shading model reflects the common shift from Phong/Blinn-Phong to a generic BRDF as described by Cook/Torrance (A Reflectance Model for Computer Graphics).
  • kinskiGL now also supports the glTF-2.0 model format as plain or binary file.

 

results

finally some screenshots to round up the post.

all models are lit by the .hdr maps in the background alone, though the lighting model plays nicely with classic point/spot/directional lights.

 

sources

most models are from Khronos’ collection of glTF-2.0 testmodels: github.com/KhronosGroup/glTF-Sample-Models

the background HDR maps used can be found here: http://www.hdrlabs.com/sibl/archive.html

the application used is a 3Dviewer, which is a sample application of my KinskiGL framework: github.com/crocdialer/KinskiGL

 

conclusion

it’s 2018, looks like we made some progress recently.

 

hope you like it,

croc

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]]> https://crocdialer.com/kinskigl-now-using-physically-based-rendering-pbr/feed/ 0 —-low life led—- 2018 hammer demo in Schwarz Matt https://crocdialer.com/low-life-led-2018-hammer-demo-in-schwarz-matt/ https://crocdialer.com/low-life-led-2018-hammer-demo-in-schwarz-matt/#respond Wed, 28 Feb 2018 14:02:21 +0000 Deprecated: Creation of dynamic property WP_Term::$cat_ID is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 378 Deprecated: Creation of dynamic property WP_Term::$category_count is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 379 Deprecated: Creation of dynamic property WP_Term::$category_description is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 380 Deprecated: Creation of dynamic property WP_Term::$cat_name is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 381 Deprecated: Creation of dynamic property WP_Term::$category_nicename is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 382 Deprecated: Creation of dynamic property WP_Term::$category_parent is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 383 http://crocdialer.com/?p=28 proof of concept for my most recent work. low life led is a scalable and weatherproof LED-toolkit. arbitrary video content can be streamed via network to an array of microcontrollers, which in turn control the leds. the leds are sealed in watertight acrylic tubes and attached with a simple, custom bus system. this allows for […]

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]]>

proof of concept for my most recent work. low life led is a scalable and weatherproof LED-toolkit.

arbitrary video content can be streamed via network to an array of microcontrollers, which in turn control the leds.

the leds are sealed in watertight acrylic tubes and attached with a simple, custom bus system. this allows for chaining without significant voltage drops.

 

in this demo the ability to calibrate the individual LED positions is showcased.

to make the setup quick and easy I built a calibration tool with the option to auto-calibrate with a camera.

the calibration sequence looks like this and created above results.

the software is based on my kinskiGL toolkit and can be found here:

https://github.com/crocdialer/KinskiGL

and the project itself here:

https://github.com/crocdialer/kinski_projects/tree/master/led_grabber

https://github.com/crocdialer/kinski_projects/tree/master/led_proxy

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]]> https://crocdialer.com/low-life-led-2018-hammer-demo-in-schwarz-matt/feed/ 0