Consider making highway=track color-adaptive based on aerials or add halo

[mkoniecz]

What steps will reproduce the problem?

1. use aerial with plenty of brown (early spring / late autumn images in forest in temperate climate)
2. map highway=track tractype=grade5

What is the expected result?

highway=track is visible

What happens instead?

it is not

Please provide any additional information below. Attach a screenshot if possible.

​https://www.openstreetmap.org/#map=19/49.55435/21.79618&layers=N with Geoportal images at high zoom (see attachment)

URL:https://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2019-12-01 23:10:15 +0100 (Sun, 01 Dec 2019)
Build-Date:2019-12-02 02:30:57
Revision:15553
Relative:URL: ^/trunk

Identification: JOSM/1.5 (15553 en) Linux Ubuntu 16.04.6 LTS
Memory Usage: 1479 MB / 1820 MB (509 MB allocated, but free)
Java version: 1.8.0_201-b09, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: :0.0 1920x1080
Maximum Screen Size: 1920x1080
libcommons-logging-java: libcommons-logging-java:all-1.2-1+build1
fonts-noto: fonts-noto:-
VM arguments: [-Djava.util.Arrays.useLegacyMergeSort=true, -Djnlp.tk=awt, -Djnlpx.jvm=${JAVA_HOME}/jre/bin/java, -Djnlpx.splashport=58929, -Djnlpx.home=${JAVA_HOME}/jre/bin, -Djnlpx.remove=false, -Djnlpx.offline=false, -Djnlpx.relaunch=true, -Djnlpx.session.data=/tmp/session3143959877009545366, -Djnlpx.heapsize=-1,2147483648, -Djava.security.policy=file:${JAVA_HOME}/jre/lib/security/javaws.policy, -DtrustProxy=true, -Dsun.awt.warmup=true, -Djava.security.manager]
Dataset consistency test: No problems found

Plugins:
+ OpeningHoursEditor (35242)
+ PicLayer (35104)
+ apache-commons (35092)
+ buildings_tools (35171)
+ continuosDownload (82)
+ ejml (35122)
+ geotools (35169)
+ imagery_offset_db (34908)
+ jts (35122)
+ log4j (34908)
+ measurement (35221)
+ reverter (35226)
+ todo (30306)

Validator rules:
- ${HOME}/Documents/install_moje/OSM software/josm/data/validator/deprecated.mapcss
- ${HOME}/Documents/install_moje/OSM software/josm/data/validator/unnecessary.mapcss
- ${HOME}/Documents/install_moje/OSM software/josm/data/validator/combinations.mapcss

Last errors/warnings:
- W: No configuration settings found.  Using hardcoded default values for all pools.
- W: No default layer selected, choosing first layer.
- W: java.net.SocketException: Unexpected end of file from server

[skyper]

This is not only a problem with track but with all single coloured ways when the background colour is the same like all kinds of deserts from ice over snow and stone to sand with plain surface.

[gaben]

This is an interesting problem. I would sample the background imagery around every N node by X*X pixels, and if it's too similar to the way color, change it.

Exposing this sampling functionality would also help me write a plugin I planned for some time now.

[stoecker]

That would add a complexity to the software which in no way compares to the usefulness of the feature. It can be much easier solved by using a different paintstyle.