Differences

This shows you the differences between two versions of the page.

--- pmann [2023/01/16 15:19] – [The Pathomation ANNotation interface] angelos
+++ pmann [2023/01/16 15:22] (current) – [The Pathomation ANNotation interface] angelos
@@ Line 8: / Line 8: @@
   * Indica Labs .annotations
   * Aperio .xml
-  * Images (TIFF, PNG or even whole slide images)
+  * Images (TIFF, PNG or even other whole slide images)
 To associate external files with a slide you have to use the API call [[https://docs.pathomation.com/pma.core.api/#/Api/Slide_SetExternalAnnotationFiles|SetExternalAnnotationFiles]]. This takes an array of tuples containing the //Name// and //Path// for each associated 3rd party annotations file. For //Name// you can use any text to differentiate from other annotations an the //Path// needs to be a //virtual path// to the file containing the annotations.
 You can get the previously set external annotations files for a slide via the [[https://docs.pathomation.com/pma.core.api/#/Api/Slide_GetExternalAnnotationFiles|GetExternalAnnotationFiles]] API call, which returns the array of //Name/Path// tuples for each file associated with any slide
-**Note for image overlays**
+**Notes for image overlays:**
-When using an image as an annotation layer, PMA.core assumes that the aspect ratio of the overlay and the whole slide image are exactly the same.
+  * Image overlays should have transparency otherwise they will completely hide the whole slide image. Image formats that support alpha channel are PNG and certain TIFF configurations.
+  * When using an image as an annotation layer, PMA.core assumes that the aspect ratio of the overlay and the whole slide image are exactly the same.
 ==== Example ====