Communication management system, communication system, communication management device, image processing method, and non-transitory computer-readable medium

A terminal apparatus, comprising:

• circuitry configured to:
• share a stroke image during a videoconference session with another terminal apparatus, the stroke image having been drawn on the terminal apparatus in the videoconference session;
• accept a designation operation for designating one or more pieces of stroke data, which are operation targets, from among a plurality of pieces of stroke data representing the stroke image;
• determine a result indicating whether to prohibit the another terminal apparatus from performing an operation to the one or more pieces of stroke data while the circuitry performs an edit operation on the operation targets;
• and
• prohibit, based on the result indicating to prohibit, the another terminal apparatus from performing the operation to the one or more pieces of stroke data while the circuitry performs the edit operation on the operation targets.

An image processing method performed by a terminal apparatus, the image processing method comprising:

• sharing a stroke image during a videoconference session with another terminal apparatus, the stroke image having been drawn on the terminal apparatus in the videoconference session;
• accepting a designation operation for designating one or more pieces of stroke data, which are operation targets, from among a plurality of pieces of stroke data representing the stroke image;
• determining a result indicating whether to prohibit the another terminal apparatus from performing an operation to the one or more pieces of stroke data while the circuitry performs an edit operation on the operation targets;
• and
• prohibiting, based on the result indicating to prohibit, the another terminal apparatus from performing the operation to the one or more pieces of stroke data while the circuitry performs the edit operation on the operation targets.