Image processing device, projector, and image processing method

An image processing method in an image processing device including a first line memory and a second line memory, comprising:

• converting a horizontal resolution of input image data to output horizontal resolution-converted image data;
• storing the horizontal resolution-converted image data in the first line memory or the second line memory;
• specifying whether the horizontal resolution-converted image data is stored in the first line memory or in the second line memory;
• reading the horizontal resolution-converted image data from either of the first line memory and the second line memory;
• and
• converting a vertical resolution of the horizontal resolution-converted image data read by the line memory reading unit to generate output image data.

An image processing device that processes input image data configured to include a line including image data for the left eye and a line including image data for the right eye, comprising:

• a horizontal resolution converting unit that converts a horizontal resolution of the input image data to output horizontal resolution-converted image data;
• a first line memory that store the horizontal resolution-converted image data;
• a first line memory and a second line memory that store the horizontal resolution-converted image data;
• a second line memory that store the horizontal resolution-converted image data;
• a line memory specifying unit that specifies, according to line formation based on the input image data, whether the horizontal resolution-converted image data is stored in the first line memory or in the second line memory;
• a line memory reading unit that reads the horizontal resolution-converted image data from either of the first line memory and the second line memory;
• and
• a vertical resolution converting unit that converts a vertical resolution of the horizontal resolution-converted image data read by the line memory reading unit to generate output image data.