GEODESIC PHOTOGRAMMETRY SYSTEM (GPS)

When localizing sources of electrical activity in the brain, accuracy is everything. The Geodesic Photogrammetry System (GPS) allows you to increase the accuracy of source estimation, by determining the location of the EEG sensors on the scalp.

The GPS is an innovative photographic technology for sensor localization. The GPS 2.0 uses 11 cameras mounted in a geodesic array to photograph sensors on the patient’s head, allowing the simultaneous recording of all sensor positions. Patients are then free to go immediately.

At any time after photography, the location of the sensors can be determined by manually labeling the positions of the sensors in the photographs and then using a triangulation algorithm in the software to solve for the locations. The solved point cloud can be compared to the original pictures to verify accuracy.

The Geodesic Photogrammetry System has been shown to result in similar accuracy to that obtained with electromagnetic digitizers (Russell, Eriksen, Poolman, et al. (2005)). However, unlike electromagnetic digitizers, photogrammetry is not susceptible to electromagnetic interference, and therefore provides reliable data even in electrically noisy environments.
In addition, measurements with electromagnetic digitizers require a patient to remain still for the entire measurement, which can be difficult for some participants, particularly pediatric patients or patients with behavioral challenges. In contrast, the GPS 2.0 method can be used with any patient, as the measurement is complete within seconds.


The Geodesic Photogrammetry System includes:

• a precision geodesic dome of 11 cameras
• gantry with effortless counterweight movement
• Net Station Photogrammetry software module
• data acquisition computer and monitor
• calibration object
• manuals and reference materials
• on-site installation and training
• full year support contract GPS supplement

http://www.egi.com/clinical-division/clinical-division-clinical-products/clinical-division-geodesic-photogrammetry-system

FOTOGRAMETRI DALAM BIDANG PERUBATAN DAN PERGIGIAN

Hai semua! Dalam entry kali ini kami akan terangkan pula peranan fotogrametri dalam bidang perubatan dan pergigian. Hal ini demikian kerana, tidak ramai di antara kita yang mengetahui dan terdedah kepada fotogrametri dalam bidang perubatan dan juga pergigian.

Perubatan merupakan salah satu bidang yang agak kritikal di Malaysia. Begitu juga halnya jika dibandingkan di Negara lain. Sebagai contoh, Korea. Mereka ini gemar melakukan pembedahan plastik di mana ada segelintir dalam kalangan mereka yang sangat obses terhadap pembedahan plastik untuk kelihatan seperti artis yang diminati sehingga sanggup menghabiskan jutaan wang. Walaubagaimanapun, hal ini adalah sangat berisiko kerana ada pembedahan yang dilakukan berjaya dan ada juga sebaliknya.

Namun begitu, ada yang tertanya-tanya, apa kaitannya pembedahan plastik dengan fotogrametri? Tugas sebagai seorang doktor bedah adalah melakukan pembedahan. Jika dikaitkan dengan fotogrametri, ianya memainkan peranan dalam melakukan pemetaan 3D terhadap muka manusia. Doktor bedah memerlukan panduan sebelum melakukan pembedahan terhadap muka manusia. Oleh itu, fotogrametri memainkan peranan penting dalam melakukan pemetaan terhadap muka manusia sebagaimana rupa yang diinginkan oleh pesakit. Kemudian, pembedahan dilakukan terhadap model terlebih dahulu sebelum pembedahan sebenar dilakukan terhadap pesakit. Seterusnya, rupa model dan pesakit dipadankan dan dibandingkan agar kelihatan sama sebagaimana yang telah dipetakan.

Pembedahan Plastik Menyerupai Miranda Kerr

Dan begitu juga halnya jika dikaitkan ke dalam bidang pergigian, kaedah fotogrametri digunakan untuk mengukur dimensi gerbang gigi, saiz gigi, bentuk gigi dan juga kedudukan relative gerbang gigi pada bahagian atas dan bawah. Ianya penting untuk melakukan pembedahan dan rawatan pergigian. Fotogrametri sistem digunakan untuk menghasilkan 3D model gigi. Untuk keseluruhan 3D model gerbang gigi, ianya memerlukan satu set scan bagi pelbagai posisi plaster model. Orientasi gigi tersebut adalah berdasarkan kehendak pesakit. Seterusnya, rawatan dan pembedahan gigi dilakukan sebagaimana yang telah dimodelkan mengikut kehendak pesakit.

3D Modelling dalam Pergigian

Sumber dari :

http://www.slideshare.net/dentistryinfo/photogrammetric-techniques-for-dentistry-analysis-planning

http://www.facialplastics.info/blogs/the-new-plastic-surgery-app.html

http://mobile.hmetro.com.my/articles/MirandaKerrKorea/Article

http://www.dentalproductsreport.com/blog/objet-3d-printers-approved-sirona-model-production

https://www.youtube.com/watch?v=UmoHvkaASEo

FOTOGRAMETRI DALAM PENGHASILAN 3D (PENGHASILAN FILEM)

INTRODUCTION

            The Photogrammetry, 3D Imaging and Metrology Research Group carry out a wide variety of scientific and applied research directed towards the acquisition and understanding of accurate, precise and reliable measurements of a diverse range of natural and man made objects and structures. Activities span a wide range of interests including inspection for nuclear fusion, deformation monitoring of aeronautical and engineered structures to the accurate spatial and colour recording of fine art and cultural heritage artefacts.
                  Expertise encompasses photogrammetric image networks and sequences, vision metrology, laser scanning, range imaging and a wide range of digital recording and 3D modelling techniques. Recent collaborations include Airbus, NPL, NASA, JET, Rolls-Royce, Arup, Thameslink, British Museum, Science Museum, Petrie Museum, Tate Gallery, British Library, 3DEncounters / IET, Arius3D, FARO, Hexagon, CULTNAT, Universities of Bergen, Parma, Lancaster, RMIT, Waikato. We also work widely across UCL with active projects in Computing Science, Architecture, Anthropology, Museums & Collections, Archaeology, Slade, Information Science and the UCL Centre for Digital Humanities.

SOURCE : https://iris.ucl.ac.uk/iris/browse/researchGroup/1463

3DIMPACT 

                 The UCL 3DIMPact (3D Imaging, Metrology & Photogrammetry applied coordinate technologies) Research Group carries out a wide variety of scientific and applied research directed p3dim-shard.jpgtowards the acquisition and understanding of accurate, precise and reliable measurements of a diverse range of natural and man made objects and structures. Activities span a wide range of interests including inspection for nuclear fusion, deformation monitoring of aeronautical and engineered structures to the accurate spatial and colour recording of fine art and cultural heritage artefacts. Expertise encompasses photogrammetric image networks and sequences, vision metrology, laser scanning, range imaging and a wide range of digital recording and 3D modelling techniques.

Recent collaborations include Airbus, NPL, NASA, JET, Rolls-Royce, Arup, Thameslink, British Museum, Science Museum, Petrie Museum, Tate Gallery, British Library, 3DEncounters / IET, Arius3D, FARO, Hexagon, CULTNAT, Universities of Bergen, Parma, Lancaster, RMIT, Waikato. We also work widely across UCL with active projects in Computing Science, Architecture, Anthropology, Museums & Collections, Archaeology, Slade, Information Science and the UCL Centre for Digital Humanities.

Research
3DIMPact focuses on the acquisition and analysis of accurate and reliable measurements using techniques such as imagery and laser scanning, applying these to natural and man-made objects, across a range of application areas.

3D Imaging: We test sensor accuracy, develop new calibration strategies and develop new applications for 3D cameras
BIM: Building Information Modelling has been gaining momentum recently in the UK construction industry, especially with impending government legislation that encourages the use of this process on their contracts

IN FILM MAKING SUCH AS 'THE MATRIX', photogrammetry techniques was used in most of the scenes in that film.

An another example of the  3D video :

An example of a man's face, that had been computerized into an animation figure.Using the metrology technique, that had been applied to.

Eventhough, most of the technologies of photogrammetry are used in land survey, photo aerial and etc, nowadays it has been widely used in film making. Without our awareness,