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[DRAFT VERSION]

UNIDENTIFIED STRUCTURES IN HANCOCK, MI DOCUMENTATION BASED ON LOW COST PHOTOGRAMMETRY

Jorge.Garcia.Fernandez, October 2013 Colaborators: Yushin Ahn (MTU) Mark Dice (MTU) Utku Karacelebi (MTU) Leonor Medeiros (MTU) Jose Martinez (UVa)


SCALE 1:20

01_ DEPTH MAPS

0

0.4 m

1m

2m

SCALE 1:10

0

0.2 m

Depth map to determine the complexity of the site in its three axes. Vector distances respect an horizontal ideal plane are rendered by a color scale. This and all 3D models presented, were created using image based information (low-cost photogrammetry), minimizing hardware and software resouces with high quality.

0.5 m

1m

LFA jorge.garcia.fernandez, October 2013


SCALE 1:20

0

0.4 m

1m

2m

SCALE 1:2

0

40 mm

True ortho allows us to analyze rectified radiometric information, overlapping color register with hi-accuraccy metric 02_ TRUE ORTHO properties. Density and precision are supporting visualization close to 1:1 scale. Vectorization was done based on color VECTORIZED and geometric information from 3D models, it allows complex measurements, shape comparison and structural analysis.

100 mm

200 mm

LFA jorge.garcia.fernandez, October 2013


2'

3' 4'

m

1'

M ul

tip l

e

se ct io

n:

46

x

0.

1

Cross section 1-1'

1 4

2

3

0

SCALE 1:50

1m

Cross section 2-2'

2.5 m

Cross section 3-3' SCALE 1:25

0

0.5 m

2.5 m

1.25 m

Cross section 4-4' Multiple section 46 x 0.1m

03_ CROSS SECTIONS

SCALE 1:30

0

0.6 m

The site analysis requires cross sections to understand proportions, geometry and structure. Sigle and multiple sections through most significant geometries are represented by unification of vectorized lines and geometry projection in background.

3 m

1.5 m

LFA jorge.garcia.fernandez, October 2013


Click on the link!

A

Click on the link!

B

HIGH ACCURACY 3D MODELS A

B

Model readings allow us to define singular details such as the rig structures on the holes: stretcher and header bond, wich are indicating different functions.

3D MODELS FOR SOCIAL MEDIA Models uploaded in public and dinamic repositories, caracterized by low density mesh with high texture quality, enabling the application for further work in social media fields based on online network platforms.

A B holes

04_ 3D MODELS

https://sketchfab.com/show/4e89b69698ff453abc629e720247d278

Two clear objectives defining three-dimensional models generation: technical solutions by high-accuracy models [structural, typological and deformation analysis] and application in social media by low-accuraccy models with high quality in radiometric information [Virtual Reconstruction, Augmented Reality, Videogames].

channel

LFA jorge.garcia.fernandez, October 2013


Click on the link!

SCREENSHOOT

https://sketchfab.com/show/4e89b69698ff453abc629e720247d278

05_ PDF-3D

Standard formats such as Adobe Acrobat (PDF), allow us to use the same model and structure in different context. In the same way, it can be directed to diferent audiences, from profesional aims to social disemination.

LFA jorge.garcia.fernandez, October 2013


[DRAFT VERSION]

What we understand by low cost documentation?

Useful links Location / QR code / PDF format / Photogrammetry

It's the documentation which minimizes economic costs (hardware and software) and time cost, while keeping or improving at the same time the accuracy and geometric and radiometric quality. In the presented study, the documentation has been made from digital photogrammetry based on 2D image capture, the processes of internal, relative and external orientations (supported by the General Method of Photogrammetry) and the creation of dense information through 'Dense Stereo Matching' algorithm. Current digital photogrammetry, take advantage of hardware independence, overcoming limitations of traditional restitution methods or range-based information capture (laser scanner), working on academic and commercial software solutions, including free and open sources applications.

UNIDENTIFIED STRUCTURES IN HANCOCK, MI DOCUMENTATION BASED ON LOW COST PHOTOGRAMMETRY Jorge.Garcia.Fernandez, October 2013 Colaborators: Yushin Ahn (MTU) Mark Dice (MTU) Utku Karacelebi (MTU) Leonor Medeiros (MTU) Jose Martinez (UVa)

UNIDENTIFIED STRUCTURES IN HANCOCK, MI [USA]  

Documentation based on Low-Cost photogrammetry

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