This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.
The script is here:
#!/bin/bash
convert "$1" -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 "$2"
| # -------------------------------------------------------------------- | |
| # Recursively find pdfs from the directory given as the first argument, | |
| # otherwise search the current directory. | |
| # Use exiftool and qpdf (both must be installed and locatable on $PATH) | |
| # to strip all top-level metadata from PDFs. | |
| # | |
| # Note - This only removes file-level metadata, not any metadata | |
| # in embedded images, etc. | |
| # | |
| # Code is provided as-is, I take no responsibility for its use, |
| # Modified from https://github.com/rocker-org/rocker-versioned2/blob/master/dockerfiles/Dockerfile_rstudio_devel | |
| # commit: ed22626 | |
| FROM rocker/r-ver:devel | |
| ENV S6_VERSION=v1.21.7.0 | |
| # Changed rstudio version from "latest" TO 1.2.5042 | |
| ENV RSTUDIO_VERSION=1.2.5042 | |
| ENV PATH=/usr/lib/rstudio-server/bin:$PATH | |
| RUN /rocker_scripts/install_rstudio.sh |