#Rotate image in lightroom install#
#Rotate image in lightroom windows 10#
#Rotate image in lightroom code#

In my testing, orientation couldn't be read using LrDevelopController:getValue(), but I could retrieve it using LrPhoto:photo:getDevelopSettings. (Each of these is rotated anti-clockwise by 90 degrees) The orientation param is a two character string that represents the two corners at the top of the image: AB: BC: CD: DA: Note that the sides (top, right, etc) are always relative to the orientation AB, not necessarily the top, right, etc of the exported image. These aren't listed on the LrDevelopController page of the SDK docs, but are listed in the docs under LrPhoto:getDevelopSettings. Images can be cropped through the Lightroom Lua API using the parameters CropLeft, CropRight, CropTop, and CropBottom. It doesn't appear to be intended for anything other than exporting to custom APIs - seems strange considering how extensible Photoshop is with scripts and plugins. Lightroom's API is very poorly documented (unless I'm missing some newer docs that Adobe has locked away behind a login).

The Lua side handles any rotation needed to match the internal orientation of the image in Lightroom. These numbers are always relative to the exported image's orientation. The last number is the rotation/straightening angle in the range -45.0 to 45.0: Left edge The first four numbers are edge positions in the range 0.0 to 1.0 (factors of the image dimension). The format of this file is five numbers separated by new lines. The Lightroom API doesn't provide a way to read any output stream from a subprocess, so the crop data computed in Python is written to a text file and picked up by the Lua plugin. The Python and Lua components of this are independent you can switch the Python script out for any external program, as long as it writes the same data out for Lightroom.

#Rotate image in lightroom code#

Running from Lightroom is slower and you'll only see an exit code if the script has a problem. It's easiest to hack on the Python script by running it directly with a test image, rather than running it through Lightroom. Use File -> Plug-in Extras -> Auto Crop Negative to run the script. Restart Lightroom and you should now see 'Negative Auto Crop' listed under File -> Plug-in Manager.

#Rotate image in lightroom install#

The easiest way to install OpenCV at the time of writing is through Homebrew:Ĭd ' $HOME/Library/Application Support/Adobe/Lightroom/Modules/ ' Xming (X server for Windows) running to allow windows from the Python script.

#Rotate image in lightroom windows 10#

OpenCV and Python installed in the Windows 10 Linux Subsystem (because Python+OpenCV natively on Windows is a pain to set up).

The exact code demoed in the post can be seen here. Note that some modifications have been made since the Hackaday post. Images of this running can be seen on Hackaday.io. This works most of the time, but fails on images that threshold to many smaller contours that don't join (eg.

Calculate the crop for the image using the median of the collected rectangles.

Once the largest contour/blob is too large, stop collecting rects.

At each threshold, collect the rotated bounding rectangle around the largest contour/blob (larger than a minimum size).

Threshold the image starting from zero, increasing in steps.

The detection works, but it could be better. Scanned film negatives to only the exposed area of the emulsion using OpenCV. This is a proof of concept plugin for Adobe Lightroom 6 that automatically crops Film negative auto-crop plugin for Lightroom 6