Remote sensing image transformation with cosine and wavelet method for SPACeMAP Visualization

Abstract

Remote sensing imagery in LAPAN has been managed and distributed through many media and device, like CCT, DCRSy, tape, CD, DVD, hard drive. The format is available from Quicklook data (in JPG or BMP), data RAW (in Gtiff or ground station data format). There also exist metadata that bring along in each remote sensing data like Landsat data, SPOT, Radar data, and High-resolution data. From that all collection then it would need some system that can arrange, keep and distribute data in a huge amount of number. Research on metadata structure and standard will be required in managing a large number of remote sensing data. Types and formats from those remote sensing data will be various but the raster format which most widely used is GeoTiff. Metadata for every raster data format is already standardized following the rule of ISO 19139 and 19115. SPACeMAP is a new web catalog system that uses the simplest and latest raster data format for displaying the mosaic image, data processing result, data raw format and etc. The structure of raster data format (like Gtiff and ECW) is very flexible although the format needs certain criteria. Metadata also treated the same as raster format, this treatment hopefully will minimize the error.

Improve The Detection of Tree Crowns on Drone Images by Machine Learning Algorithm

“…GeoTIFF File and Key Structure and the Appendices of the Format Specification, Revision 1.0 for information on Tag ID, Key ID, and number codes. Similar to the TIFF format, GeoTIFF can only be up to 4 GB in size because of the 32-bit coordinates required [11]. BigTIFF is a variation of TIFF that was created to meet the requirements of geographic information systems (GIS), large format scanning (LFS), medical imagery, and other areas by allowing for images larger than 4 GB through the use of 64-bit offsets.…”

Evaluation of Lossy Compressed Mosaic for SPOT-6/7 Remote Sensing Data in SPACeMAP

“…The image that ECW has compressed with the right configuration can maintain visual quality even though the image size has been reduced. The ECW format is recommended as SPACeMAP data input because it can maintain visual quality with a much lighter file size than BigTiff / Tiff files which tend to be large [20].…”