---
title: OCR Sensitivity Settings
slug: reference-guide-3-0-0/ocr-sensitivity-settings
description: Learn how Single Connect can recognize characters in changed images and configure the minimum size limits for OCR scanning during auto login. Discover how adjusting sensitivity affects resource usage and explore methods to debug the OCR process by increas
docTags: 
createdAt: 2022-07-28T09:50:56.000Z
---

Single Connect tries to recognize the characters inside the changed images. There are configurable size limits for the images scanned for the characters. These limits are used for OCR command logging and configurable from the System Config. Man. page:

- **
nsso.remote.desktop.ocr.min.width**: The minimum width for images scanned for OCR logging, in pixels. Default value is 400.
-
  **nsso.remote.desktop.ocr.min.height**: The minimum height for images scanned for OCR logging, in pixels. Default value is 240.


OCR is also used for the Remote Application Auto Login process. Generally, more sensitivity is needed to capture OCR images during the Auto Login process. These limits are used for OCR during the auto login process and are configurable from the System Config. Man. page:

-
  **nsso.remote.desktop.ocr.auto.login.min.width**: The minimum width for images scanned for OCR capture during auto login, in pixels. Default value is 40.
-
  **nsso.remote.desktop.ocr.auto.login.min.height**: The minimum height for images scanned for OCR capture during auto login, in pixels. Default value is 15.


Smaller values should be entered for more sensitivity. However, increasing sensitivity consumes more server resources.



:::hint{type="info"}
To debug the OCR process, the log level of the **com.kron.sc.remote.desktop.impl.RdpPngRecognizer** process should be increased to DEBUG. This will result in collecting all the images and texts in these images within the /u01/netright-tomcat/logs/rdp-auto-login/ folder. From here you can check which texts were logged for all the images.
:::