Elias Ioup Phones & Addresses
-
4678 Eastern St, New Orleans, LA 70122 (504) 288-2182
-
4707 Lafaye St, New Orleans, LA 70122
-
58 Lark St, New Orleans, LA 70124 (504) 283-6820
-
Chicago, IL
-
Altoona, PA
Publications
Us Patents
Method For Efficiently Transforming A Raster Image From One Map Projection To Another Map Projection
View pageUS Patent:
20070188516, Aug 16, 2007
Filed:
Feb 9, 2007
Appl. No.:
11/673363
Inventors:
Elias Ioup - New Orleans LA, US
John Sample - Diamondhead MS, US
Hillary Mesick - Long Beach MS, US
John Sample - Diamondhead MS, US
Hillary Mesick - Long Beach MS, US
International Classification:
G09G 5/00
US Classification:
345606000
Abstract:
A method and system for efficiently converting an image from a first map projection to a second map projection image. The method includes precomputing coordinates in the first map projection for a subset of the total number of pixels in an empty second map projection image and subsequently, finding the first map projection coordinates of each of the remaining pixels by linear interpolation using the precomputed first map projection coordinates of the nearest surrounding precomputed pixels. A color is assigned to the second map projection image pixel with bilinear interpolation using color values of surrounding first map projection pixels. If the first map projection has fiducials, only the area within the fiducials is considered. An embodiment converts a USGS DOQ in UTM format into Geodetic coordinates.
Visualization Of Positional Geospatial Uncertainty
View pageUS Patent:
20190130640, May 2, 2019
Filed:
Oct 31, 2017
Appl. No.:
15/799150
Inventors:
- Arlington VA, US
Elias Ioup - New Orleans LA, US
John Sample - Pearl River LA, US
Elias Ioup - New Orleans LA, US
John Sample - Pearl River LA, US
International Classification:
G06T 17/05
G06T 7/62
G06T 7/143
G06T 7/11
G06T 7/62
G06T 7/143
G06T 7/11
Abstract:
Embodiments relate to visualization of positional geospatial uncertainty. Initially, a map image request for geographic features is received from a client computing device, where the map image request includes an uncertainty type, a distribution shape, and a selected visualization technique. An uncertainty buffer pixel size is determined based on a geographic distance covered by the distribution shape. At this stage, an uncertainty buffer of the uncertainty buffer pixel size is iterated across, and uncertainty is rendered at each position along the uncertainty buffer by determining a corresponding distribution probability from a probability distribution function at a current pixel position, mapping the corresponding distribution probability to a corresponding visual value of the selected visualization technique, rendering an uncertainty feature for the corresponding distribution probability around the geographic feature at the current pixel position and according to the corresponding visual value; and advancing the current pixel position based on the uncertainty type.