# Advanced Soft Edge
This function supports addressing the issue of bright/dark lines between LED modules by sending seam correction coefficients to the receiving cards.
# How to Perform Advanced Soft Edge?
Take the following steps to perform "Advanced Soft Edge":
Detect receivers' information: Before you correct seams on a specified screen, call Detect Receivers' Information API. The APIs for seam correction will only be accessible once the receivers have been successfully detected and their information has been obtained.
Check whether receivers support seam correction: Check whether the receivers support "Advanced Soft Edge" by calling Check Soft Edge Support API. If the receivers don't support seam correction (Soft Edge), subsequent steps cannot proceed.
Get the information of the areas controlled by the receivers: Understand the control areas of the receivers by calling Get Receiver Control Areas API. You can specify areas for sending or reading back seam correction coefficients for the following steps with the information obtained.
Enable/Disable Soft Edge: Call Enable/Disable Soft Edge API to enable the function for the specified screen.
Set seam correction coefficients: You can modify the seam correction coefficients by calling any one of the following APIs: Set Multiple Horizontal Seam Correction Coefs API, Reset Multiple Horizontal Seam Correction Coefs API, Set Multiple Vertical Seam Correction Coefs API, Reset Multiple Vertical Seam Correction Coefs API, and Reset All Seam Correction Coefs API.
Save seam correction coefficients: Save the seam correction coefficients to receivers' flash by calling Save Seam Correction Coefs API. It is recommended to call this API after you finish correcting the seams.
# How to Get Advanced Soft Edge Coefficients?
Take the following steps to get the advanced soft edge coefficients:
Detect receivers' information.
Check whether receivers support seam correction.
Get the information of the areas controlled by the receivers.
Get the seam correction coefficients: You can get the seam correction coefficients by calling Get Multiple Horizontal Seam Correction Coefs API or Get Multiple Vertical Seam Correction Coefs API.