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Airborne Remote Sensing of China Chooses Z/I Imaging’s New Digital Modular Camera
Z/I Imaging Corporation, Huntsville, Ala., announced that Shaanxi Meihang Digital Surveying (Group) Co., Ltd. has purchased the first Digital Modular Camera (DMC). Meihang Group is the largest surveying, remote sensing and mapping enterprise in China. The organization is involved in resource investigation, urban construction, land surveying, pipe surveying, field archaeology, railway and road geological survey, photogrammetry surveying and mapping, environment and disaster investigation, land planning, national thematic atlas and more. Meihang Group was the first company in China to engage in large-scale photogrammetry projects.
Unlike cameras based on line sensors, the DMC does not rely on an Inertial Measurement Unit for image reconstruction. Images from the DMC can be oriented in the same manner as conventional aerial photographs, without any additional measurements for the exterior orientation parameters such as GPS/INS. The DMC, with its rigid frame CCD technology, is the most appropriate technology for large-scale, precision engineering and mapping applications.
Z/I Imaging's DMC is unique in that it uses a modular design based on CCD-Matrix sensors to achieve high geometrical resolution together with multi-spectral capabilities. It comprises eight synchronously operating CCD cameras. Four parallel cameras can generate multi-spectral imagery for the acquisition of color composites. Four panchromatic images from converging cameras are mosaicked digitally to form a single high resolution image. The color composite image and the composed panchromatic image have the same ground coverage. The sensor model of the DMC is based on the central perspective image which allows processing of data in all existing exploitation systems. Based on its outstanding digital Forward Motion Compensation, the DMC reaches ground resolutions better than two inches.
Z/I Imaging Releases the ImageStation 2002 Photogrammetric Workstation
Z/I Imaging Corporation released ImageStation 2002, the next generation of its softcopy photogrammetric production workstation. ImageStation 2002 is the sixth generation of Z/I Imaging's Window's-based digital production systems. The 2002 modular rack-mount design allows for easy expansion with a 12 unit chassis that includes 5 units for the host computer offering dual 2.0 GHz, 512 KB L2 cache, Xeon processors; 1 GB of RDRAM; 36.7 GB system drive and two 73.4 GB data drives. The remaining seven units of rack space are available for customers to configure the workstation to meet their specific needs. Customers have a choice of dual or single 21" or 24" monitors.
The ImageStation 2002 runs on Microsoft Windows 2000 and provides the familiar Windows look and feel. The application suite provides an integrated workflow and the convenience of running Windows-compatible applications. The ImageStation 2002 includes Z/I Imaging's exclusive ImagePipe software enabling smooth stereo roam for easy digitizing and comfortable viewing. JPEG image compression software allows the user to use less disk space facilitating faster network transfers and streamlining all aspects of the production workflow.
Simmons Aerofilms Limited Selects Z/I Imaging's POS Z/I 510 Position and Orientation System
Z/I Imaging Corporation announced that Simmons Aerofilms Limited selected its POS Z/I 510 Position and Orientation System with Inertial Measurement Unit. POS Z/I 510 is Z/I Imaging’s OEM version of Applanix Corporation’s POS/AV-DG. Simmons’s new POS Z/I 510 system was installed in a Cessna 402B, G-MAPP, already equipped with Z/I Imaging’s RMK TOP15 camera.
Simmons Aerofilms is one of the United Kingdom's largest providers of aerial photography operating two aircraft with Forward Motion Compensation (FMC) cameras. The POS Z/I 510 will be used to undertake a variety of photography and mapping projects throughout Europe, the Middle East and the Caribbean during 2002. The decision to install a POS Z/I 510 was made to reduce ground control costs and provide a more complete photography and aerial triangulation service to its customers.
The POS Z/I 510 measures the position of the camera perspective center and orientation angles of each photograph at the exact time of exposure to an accuracy of 5 - 10 cm and 20 - 30 arcsec respectively (all values RMS). This performance allows direct georeferencing of aerial photographs to produce maps that meet or exceed national standards for most scales, without aerial triangulation and with minimal ground control.