Z/I Imaging Corporation has 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.