Enhancement of spatial resolution for low resolution satellite image with maintaining their color data for Iraq region

Abstract EN

In this research, the spatial merger process between two groups of images within the sensor ETM + on the LANDSAT 7 satellite has been implemented, the first group includes images of multi-channel, with low spatial resolution (30 m), while the other group contains only one satellite images with panchromatic band and with higher spatial resolution (15 m) according to Principal Components technique within ERDAS Imagine 9.2 software package.

To preserve the color content of the resulted merged images, the bands of multispectral resolution images have been selected in such a manner that, their spectral ranges were within the spectral range of the panchromatic band.

So that the selected bands of the first group were (1, 2, 3 and 4).

The study area was selected to be within Mosul city with its near surrounded regions, in the province of Nineveh in northern Iraq.

The resulted merged image showed that, the overall clarity of the ground features is significantly greater than it compared with the in any of bands from the first group (multispectral images with low spatial resolution) or from the second group.

So that, the merged images can be highly utilized in mapping and other feature extraction purposes that related with Remote Sensing.