extractCCCTimeSeries

rmskList

a numeric vector, a vector of integer numbers as the index of mask files, same length as paths. This vector shows which mask should be used with which JPEG file.

mIndex

a vector of character strings, paths to the JPEG files

paths

This function apples a list of mask matrices to a vector of jpeg images and extract statstical metrics for each chromatic coordinate on R, G and B.

coordinates

chromatic

exract

Digital repeat photography and near-surface remote sensing have been used by environmental scientists to study the environmental change for nearly a decade. However, a user-friendly, reliable, and robust platform to extract color-based statistics and time-series from a large stack of images is still lacking. Here, we present an interactive open-source toolkit, called 'xROI', that facilitate the process time-series extraction and improve the quality of the final data. 'xROI' provides a responsive environment for scientists to interactively a) delineate regions of interest (ROI), b) handle field of view (FOV) shifts, and c) extract and export time series data characterizing image color (i.e. red, green and blue channel digital numbers for the defined ROI). Using 'xROI', user can detect FOV shifts without minimal difficulty. The software gives user the opportunity to readjust the mask files or redraw new ones every time an FOV shift occurs. 'xROI' helps to significantly improve data accuracy and continuity.

extractCCCTimeSeries: Extract chromatic coefficients and their statistics for an array of JPEG files

Description

Usage

Arguments

Value