CADBEST

сряда, 7 октомври 2015 г.

The Da Vinci Code in the Bulgarian National Anthem

Геометричният анализ на слънцегреенето в природните картини, съдържащи се в Националния химн на Република България показва, че те могат да бъдат видяни така само от територии, принадлежащи в миналото на България. Въпреки внимателното цензуриране от властите, никой до сега не е обърнал внимание на така закодираните в химна ни граници на Република България. Подробности могат да бъдат видяни на:

http://lotusguides.net/files/himn_rb_code_bg.pdf

The geometrical analysis of the sunshine in landscapes contained in the Bulgarian National Anthem shows that they can be seen in this way only from territories, belonging to Bulgaria in the past. Despite careful censoring by the authorities, nobody paid attention to the coded information till now. The link above points to my article in Bulgarian that covers this topic.

The Guitar and Perspective

What can be common between the guitar as a musical instrument and the linear perspective that a painter uses? The answer can be found in my new article together with an overview of some laws and rules of the music harmony and the images produced by projecting the surrounded reality. I bring to your attention the article as PDF

http://lotusguides.net/files/guitar_and_perspective_en.pdf

http://lotusguides.net/files/guitar_and_perspective_bg.pdf

Hope you'll enjoy it.

четвъртък, 23 май 2013 г.

Dr. Zarkov at his exposition in EAA Museum - Oshkosh, Wisconsin

сряда, 10 април 2013 г.

10 YEARS AGO...

Ten years ago...
I was awarded with a gold medal for design of cardboard models.
I believe I proved that such models are not inferior of the plastic ones and even in some features like exact coloring and markings some superiority can be achieved.
You can see few pictures from the 2003 Modeling exhibition in Sofia, Bulgaria, with the range of my ModelArt 1/72 and 1/32 cardboard models. These pictures are published for the first time.
The all models are designed by using the developed by me Surfmaster software tool that works in AutoCAD.

петък, 6 януари 2012 г.

Digital Camouflage and Card Models

This is one of the cases where paper modeling has some considerable advantage in comparison to plastic modeling. This is recreation of so called digital camouflages. The digital camouflage is capable to jam not only the human visual reception, but the target acquisition as well. It adds high frequency noise to the viewer reception tract by adding some small patterns over the large ordinary camouflage patterns. They can be set of squires /pixel style camouflage/ or more complicated figures with hexagonal or irregular shape. Painting such camouflage on the model is a real challenge. But it is very easy to paint it on plain paper and then to build the model, giving only the necessary shape of the model’s parts and glue them together.

You can see the 1/32 e-build paper kit that represents the military version of DAR-27 Spector of the two seater ultra light DAR’s Scooter as border patrol aircraft in Bulgarian Air Forces service.

DAR-27 Spector in digital camouflage and Bulgarian Air Force Insignia.

And the illustration how effective the digital camouflage can be.

One more view of e-build 1/32 DAR 21 Vector 2 and DAR 27 Spector card models.

You can download the DAR 21 for free from http://www.papermodels.co.il/
The Spector will be in its place in the formation also as free card model kit.

Enjoy.

сряда, 4 януари 2012 г.

3D Models and Background Accordance

Adding 3D model to some existing background may cause problems.

Despite the some tolerances that human view system allows as perspective invariants in images perception, the mismatch of perspective properties of separate objects joint in one view can be very irritated. And vice versa – correctly set camera parameters, placement the 3D model and background projection plane produce “Just like a real thing” views.

In many cases when co planarity, perpendicularity and some similar a prior information for 3D model and background is known, usage the vanishing points, horizontal, vertical lines and the other well known perspective attributes are enough for obtaining acceptable results.

But what happens when such information is unavailable?

I believe that I found the answer in general. By using epipolar geometry and only 6 points in general position I can exactly joint the 3D object to background projection. The algorithm is simple /no fundamental matrix calculation, no homogenous equation system!/

Soon the algorithm will be available as AutoCAD plug in. There is one preliminary result:

The original picture from Stallion 51 Flight Operations

One more P-51 D added in the hangar

Just like a real thing! Enjoy.

събота, 3 декември 2011 г.

Few more e-build card models

I’m adding few more pictures of my e-build card models. These are not simply 3D models, created by using the available modeling features of AutoCAD. The models are obtained by digital rolling back of the models’ kits cutouts. The design of the models and their 3D e-build are made by using my SurfMaster software tool. It works under AutoCAD and increases its features, providing additional abilities for sheet materials design.