Abstract
Nowadays, mobile phones are more than a device that can only satisfy the communication need between people. In addition to providing ease to human lives with various applications, lens kits that can be integrated to mobile phones have recently been introduced. Fisheye lenses that are compliant with mobile phones are one of these new types of equipment. Since fisheye lenses integrated with mobile phones are lightweight and easy to use, they are advantageous. In addition to this advantage, whether fisheye lens and mobile phone combination can be used in a photogrammetric way is experimented, and if so, what will be the result. The main purpose of this study is to test fisheye lens equipment used with mobile phones. In this study, standard calibration of “Olloclip 3 in one” fisheye lens used with iPhone 4S mobile phone and “Nikon FC-E9” fisheye lens used with Nikon Coolpix8700 are compared based on equidistant model. The results of these calibrations are analyzed, using photogrammetric bundle block adjustment. This study suggests a precalibration process of these kinds of hardware for the photogrammetric process in the test field.
Highlights
While mobile phones are mainly used for outdoors communication, the developing electronics technology enabled them to be used for various other applications on the Globe as well
Standard calibration of “Olloclip 3 in one” fisheye lens used with iPhone 4S mobile phone and “Nikon FC-E9” fisheye lens used with Nikon Coolpix8700 are compared based on equidistant model
At the end of the application designed for testing, numerical values of calibration parameters and root mean square of those parameters that were calculated according to equidistant model were compared between the “Olloclip 3 in one” fisheye lens used with iPhone 4S mobile phone and standard “Nikon FC-E9” fisheye lens used in Nikon Coolpix8700
Summary
While mobile phones are mainly used for outdoors communication, the developing electronics technology enabled them to be used for various other applications on the Globe as well. State-of-the-art technology product fisheye lenses which have been integrated with mobile phones are one of these new types of equipment. These types of equipment are lightweight and easy to use. These lenses are cost efficient compared to conventional fisheye lenses. Some of those lens kits for iPhone are presented in [1]. People do not want to possess a digital camera since mobile phones are equipped with enough capable cameras. Reference [3] reports first experiences in calibration and accuracy validation of mobile phone cameras. The new system will be able to contribute to the novel mobile Web map services with fisheye views for mobile terminals such as cellular phones
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