To change the limit of image size in Odoo, you can modify the max image size setting in the configuration file or modify the database column to accept larger images. Here's how you can do it:

1. Modify the max image size setting in the configuration file:

• Locate the Odoo configuration file (odoo.conf) in the Odoo server directory.
• Add the following line to the file: limit_memory_hard = 2147483648 (2GB)
• Save the file and restart the Odoo server.

1. Modify the database column to accept larger images:

• Log in to Odoo as an administrator.
• Go to the Settings menu and select Technical > Database Structure > Fields.
• Find the binary field that you want to modify and click on it to open the field properties.
• Change the size attribute of the field to a larger value (e.g. 4194304 for 4MB).
• Save the changes and restart the Odoo server.

Note that increasing the image size limit may have performance and storage implications, so it is important to consider these factors before making any changes. Also, make sure to back up your database before making any modifications.