Droplet discharge apparatus and droplet discharge method

A droplet discharge apparatus to discharge a droplet onto a recording medium according to image data while being moved by a user, the droplet discharge apparatus comprising:

• a head to discharge the droplet onto the recording medium;
• a sensor to detect a movement amount of the droplet discharge apparatus in a predetermined period;
• a memory to store determination information, which indicates whether droplet discharging has been instructed for each pixel of the image data;
• and
• a processor configured to:
• accumulate the movement amount to calculate a total movement amount of the droplet discharge apparatus;
• instruct droplet discharging from the head based on the total movement amount and the image data, the instructed droplet discharging being only for an unprinted pixel for which the determination information indicates that droplet discharging has not been instructed and the unprinted pixel being included in a predetermined region of the image data;
• calculate a ratio between a number of printed pixels in the predetermined region and a total number of pixels in the predetermined region, the printed pixels for which the determination information indicates that droplet discharging has been instructed;
• and
• rewrite, based on the ratio, the determination information of the unprinted pixel to indicate that droplet discharging has been instructed.