Modulation transfer function measurement using nonspecific views

Details Modulation transfer function measurement using nonspecific views Modulation transfer function measurement using nonspecific views

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.4885...34d&link_type=abstract

Image and Signal Processing for Remote Sensing VIII. Edited by Sebastiano B. Serpico. Proceedings of the SPIE, Volume 4885, pp.

Physics

1

Scientific paper

The measurement of the Modulation Transfer Function (MTF) to quantify the quality of an imaging system proves to be very important in the context of Earth observation satellites. In particular, this measurement is essential to carry out the focusing of the telescope, or to implement a deconvolution filter whose goal is to enhance the image contrast or to reduce the noise. Its knowledge also allows us to compare the characteristics of different known and unknown satellites. In this paper, we suggest an univariant MTF measurement method using non specific views. First of all, the landscape has to be characterized in order to discriminate ground structure information from MTF information. Once this separation is carried out, landscape structure information can be extracted, allowing a classification between very uniform scenes and more structured ones. Then the MTF, which is described by a bidimensional analytical physical model, can be assessed using an artificial neural network. The principle is to use the artificial neural network to learn the MTF of simulated or perfectly known images, and then to use it to assess the MTF of totally unknown images. One can show that this method is robust even if the noise is taken into account. As a result, maximum MTF assessment errors are less than 10%. This enables us to suggest further developments including a general scheme of criteria assessment of image quality.

Affiliated with

Also associated with

No associations

Rating

Modulation transfer function measurement using nonspecific views does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Modulation transfer function measurement using nonspecific views, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modulation transfer function measurement using nonspecific views will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1172272