| 摘要 |
<p>An image is divided into a plurality of pixel groups, each of which includes a predetermined number of adjacent pixels, and each pixel group gradation value representative of a respective pixel group is decided. Then, data of the number of the pixel groups is decided by referring to a conversion table in which combinations of the pixel group gradation values and the class numbers assigned to the respective pixel groups are associated with the data of the number of dots to be formed in the pixel groups. Then, the dots are formed by deciding those pixel positions for forming the dots the number of which is indicated in the number data, while referring to the pixel order representative of ease of forming the dots in the pixel groups. The number data can be quickly transferred/received since it includes no information of pixel positions and hence small in data amount. Additionally, the reference to the conversion table allows the number data to be quickly decided. Therefore, high-quality image data can be quickly outputted. Thus, there can be provided a technique for quickly outputting high-quality images through a simple process.</p> |
