Results 41 to 50 of about 11,625,480 (191)

RELATIVE RADIOMETRIC CALIBRATION OF UAV IMAGES FOR IMAGE MOSAICKING

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
Abstract. Since UAV images are taken at a low altitude, compared to satellite or aerial images, they usually have narrow ground coverage. In order to use them over a large area of interest, it is essential to mosaic them into a large image. In addition, UAV images may have different brightness values at the same ground locations according to different ...
S. Ban, T. Kim
openaire   +3 more sources

Feature-based real-time endoscopic mosaicking

open access: yes, 2022
S.695-700In the field of minimally invasive surgery one barrier in clinical practice is the limited field of view provided by endoscopic cameras. We propose an image mosaicking approach to extend the field of view for real-time visualization by stitching
Rupp, S.   +5 more
core   +1 more source

A Mosaic Method for Side-Scan Sonar Strip Images Based on Curvelet Transform and Resolution Constraints

open access: yesSensors, 2021
Due to the complex marine environment, side-scan sonar signals are unstable, resulting in random non-rigid distortion in side-scan sonar strip images. To reduce the influence of resolution difference of common areas on strip image mosaicking, we proposed
Ning Zhang   +4 more
doaj   +1 more source

Towards Image Mosaicking with Aerial Images for Monitoring Rice Crops [PDF]

open access: yes, 2017
Around 8 to 10 million Ton of rice are required in the following years to be able to supply the demand of the overall population. Analysis and monitoring of rice crops becomes nowadays very important issue for farmers, for ensuring a rice production level to cope this demand.
Rojas, Juan   +3 more
openaire   +1 more source

Retinal slit lamp video mosaicking [PDF]

open access: yes, 2016
Purpose To this day, the slit lamp remains the first tool used by an ophthalmologist to examine patient eyes. Imaging of the retina poses, however, a variety of problems, namely a shallow depth of focus, reflections from the optical system, a small ...
Richa, Rogerio   +4 more
core   +4 more sources

TOWARD REAL TIME UAVS’ IMAGE MOSAICKING [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Anyone knows that sudden catastrophes can instantly do great damage. Fast and accurate acquisition of catastrophe information is an essential task for minimize life and property damage.
S. Mehrdad   +3 more
doaj   +1 more source

Mosaicking and enhancement of slit lamp biomicroscopic fundus images [PDF]

open access: yesBritish Journal of Ophthalmology, 2001
To process video slit lamp biomicroscopic fundus image sequences in order to generate wide field, high quality fundus image montages which might be suitable for photodocumentation.Slit lamp biomicroscopic fundus examination was performed on human volunteers with a contact or non-contact lens.
J, Asmuth   +3 more
openaire   +2 more sources

A Coarse-to-Fine Image Warping Approach Using Trust Region Optimization for Orthoimage Mosaicking

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Orthoimage mosaicking aims to make the seamline bypass obvious objects to produce seamless digital orthophoto maps. Nevertheless, stitching artifacts may still occur when obvious objects are inevitably crossed by the seamline or when the orthoimages are ...
Hongche Yin   +5 more
doaj   +1 more source

Monitoring of Crustose Coralline Algae Using Low‐Altitude Unmanned Aerial Vehicles in Intertidal Reefs

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
High‐resolution visible‐light imagery from low‐altitude unmanned aerial vehicles, combined with superpixel segmentation and a Random Forest classifier, provides an efficient and scalable framework for mapping and monitoring crustose coralline algae and reef habitats.
Po‐Chien Lin   +2 more
wiley   +1 more source

Mapping Scytonemin Pigment Content and Biocrust Functional Indicators Using High‐Resolution Multispectral Imagery

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
We demonstrate that high‐resolution multispectral imagery combined with machine learning can accurately predict key biocrust functional indicators, particularly the UV‐protective pigment scytonemin, across dryland ecosystems. Using fine‐scale imagery acquired in the Chihuahuan Desert and Colorado Plateau, we identified spectral bands strongly ...
Raúl Román   +8 more
wiley   +1 more source

Home - About - Disclaimer - Privacy