Control devices and methods for controlling image display

A medical system, comprising:

• a medical device, configured to generate a medical image sequence of a subject;
• a display device, configured to display the medical image sequence;
• and
• a control device, configured to control a display of the medical image sequence on the display device, wherein:
• the control device includes a touch control panel,
• the touch control panel includes a plurality of predetermined regions corresponding to a plurality of gesture instructions,
• the control device is configured to:
• receive a target gesture instruction with respect to a target predetermined region among the plurality of predetermined regions;
• in response to the target gesture instruction, generate a control signal for controlling the display device to perform a target operation on the medical image sequence based on a corresponding relationship between the plurality of gesture instructions and a plurality of operations of the display device.