Detect inside/outside body algorithm and mapping on surface

Dear Freelancer,

can you create an inside/outside algorithm for a body defined only by 961 points of its surface? This should be done in Excel/VBA. A second task is to map any color outside the body to a point on its surface.

Color Theory Background

The CIELAB color space has an irregular surface (gamut) which is defined by so-called "rectangular colors" - these are spectral distributions with 1 maximum (100 per cent) and 1 minimum reflectance (0 per cent). The following picture shows the result for spectral steps of 10nm:

[url removed, login to view]:[url removed, login to view]

For example, a value of Lab (0, 50, 50) is not inside the body, the algorithm should detect this and map it on the surface.

Triangle surface

It will be a possibility combine the surface colors by lines and by this create surface triangles that altogether create the body hull. This way, there will be many edges on the hull, maybe you have an idea to create a smoother surface.

How should a color outside be mapped?

HLC are the polar coordinates of Lab values and they can be interpreted as Hue (base color), Lightness and Chroma (saturation).

The most important factor of a color is its base color (Hue), and the second one is its lightness. Thus, a color outside should be mapped to a surface point with same hue and lightness, and less chroma.

The project attached files

You find an Excel file with (rectangular) Lab and (polar) HLC values of the body's surface colors. Please create a VBA module that can differ inside/outside and map outside to a value on surface following the above rule.

freieFarbe e.V. - freeColor reg.assoc.

We are color professionals from several countries who want to change the world of color. We are convinced that not color collections but mathematical color definitions are the best way to work with color, and CIELAB is the most appropriate model, as it

- is copyright and license free

- contains and describes every possible color

- can calculate any in-between color

- is perfect for harmony calculation

- is defined not only technically (like RGB) but perceptually

Since 2016, we are an approved non-profit association after german law.

Interested to join us?

See [url removed, login to view]

Skills: PHP, Software Architecture

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About the Employer:
( 15 reviews ) Oldenburg, Germany

Project ID: #15232837

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please ignore the bid amount we will discuss the price later in the chat after we have discussed the project thoroughly Relevant Skills and Experience: . Proposed Milestones: 190 - . Hi dtpholgi! Please drop a message More

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Hey There, Thanks for posting the project. Its looks feasible and am Interested to do it. I am an excel/word/outlook VBA automation professional having 7+ years of experience and can do it with the required quali More

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Hello. 30 % of employers hiring me once hired me again. I have 5 years experience in VBA. I CAN do this job, and do it well!

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Excel VBA Developer and found this job very interesting. I can do this perfectly. ping me for more details.

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We have strong team to work on your Project. we will analyze you requirement, after understanding your requirement we will provide solution to you.

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