Canon Kabushiki Kaisha

Takatoshi Ota

Koji Ito

Hiroaki Sugiura

Tomoyuki Hansaki

An image processing apparatus includes a dividing unit configured to divide image data into pieces of print scan image data for the plurality of print scans, a quantization unit configured to quantize the pieces of print scan image data, and a generation unit configured to generate pieces of print data for the plurality of print scans on the basis of the quantized pieces of print scan image data. In a case where a density represented by the pieces of print scan image data is a low density, the quantization unit quantizes the pieces of print scan image data so that they are mutually exclusive in the plurality of print scans.

Image processing apparatus and image processing method

An image processing apparatus configured to generate recording data used in an image forming processing for carrying out an image formation by performing a recording scan by plural times on a same image region on a recording medium, includes a division unit for dividing input image data into image data for each recording scan, a quantization unit for quantizing, based on the divided image data for each recording scan, the image data for each recording scan, and a generation unit for generating, based on the quantized image data for each recording scan, recording data for each recording scan, in which the division unit divides the input image data into the image data for each recording scan based on a division rate periodically varying in accordance with a spatial position of an image represented by the input image data.

An image processing apparatus having general versatility, for flexible quantization on multivalue image data of two or more colors to image data having a reduced number of bits in correspondence with the number of bits to be quantized, by using an error diffusion scheme. When two color multivalue data are inputted, errors distributed to the position are added to the data and inputted as I'and I&#x2032;into an output determination unit. The input data I&#x2032;and I&#x2032;are quantized by using LUTs-and-into numerical values of less-value representation. The two data from the LUTs-and-are inputted into an LUTas coordinate values in a two-dimensional coordinate system, and two color binarized bit data (total 2 bits) are outputted.

Image processing apparatus and method, computer program and computer-readable storage medium

A printing apparatus which can eliminate the necessity of issuing a head-sheet gap setting command from a digital camera even during camera direct printing, and can positively prevent a recording medium from being rubbed by a recording head and becoming tainted. A head-sheet gap adjusting device carries out adjustment of the head-sheet gap between the recording head and the recording medium according to a command from an information processing apparatus. A CPU receives a temporary command effective for one printing and a setting command which stores a setting status of the printing apparatus. When the head-sheet gap is set by the setting command, the CPU causes the head-sheet gap adjusting device to carry out the adjustment according to the head-sheet gap set by the setting command, and performs printing, while ignoring the head-sheet gap designated by the temporary command.

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Yokohama, Japan

Takatoshi Ota