aDStretch

4.6
43 reviews
1K+
Downloads
Content rating
Everyone
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About this app

DStretch is a program for the PC and Mac that is used by rock art researchers to make faint rock art visible. This is a version for Android intended to be used in the field at a rock art site. Eight enhancements are provided together with settings that can adjust strength and saturation of the enhancements. Enhancements can be applied to a photo from the camera or from the gallery. The enhancements can be saved. For ease of use you can designate a default enhancement (I recommend CRGB) that is automatically applied when an image is loaded.
The enhancements are:
CRGB, YRD, YRE, RGB0: good for red pigments.
YDT, YRD, YWE: general purpose.
YDT, YBK, YYE: good for yellows.
See DStretch.com for more information on DStretch and the enhancements.

In addition to choosing the default enhancement, you can use the menu to set:
Scale. This is the strength of the enhancement.
Saturation. This controls the saturation of the enhancement. Set to 0 for grayscale, 1.0 for normal.
MPixel Limit. Android phones can have memory problems with large images. Set this to a low value to avoid crashes, to a high value to get higher resolution for enhancements.
Output Directory. This is where the saved enhancements will be put.
Toggle Diagnostics. Turn on to get diagnostic information.
Updated on
May 11, 2022

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection
4.6
43 reviews
Robert Baker
May 12, 2022
How about an improved interface for setting the output directory rather than entering the path manually? This is really clunky! Need to be able to set to sdcard.
6 people found this review helpful
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Neha Sharma
February 13, 2022
I have done my Ph.D on rock arts and this app helped me a immensely. Window version is more advanced and having more features but android is more handy and easy to use. My whole analysis of rock art in Odisha was based on this software and discovered many images never previously reported & helped to identify. One don't need anymore line drawings in case of both pictographs and petroglyph. Heared talk of John Hermann described the software use very well.THANKS A lot. Usfull for RA reserch
1 person found this review helpful
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A Google user
December 6, 2019
Wow. is all i can say. very good job whoever built this. very good job. only a few suggestions from me and thats ability to see photo names on gallery not just photos sometimes im looking for a specific photo by name. no biggie but a suggestion and also something where i could scroll like a drag verticle wheel that would scroll through the settings live on the photo im working on this way i could see all settings effects quicker than slow change by change. no biggies. never glitches very fast.
9 people found this review helpful
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What's new

Updated to SDK 32. No functional changes.
If you have it already no need to update.