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公开(公告)号：EP0341984B1
公开(公告)日：1994-09-14
申请号：EP89304685.4
申请日：1989-05-09
IPC分类号： H04N1/40
CPC分类号： H04N1/4057 , H04N1/40025
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公开(公告)号：EP0341984A3
公开(公告)日：1991-03-20
申请号：EP89304685.4
申请日：1989-05-09
IPC分类号： H04N1/40
CPC分类号： H04N1/4057 , H04N1/40025
摘要： According to the present invention, when image data are subjected to a quantization processing by an error diffusion method, the generation of a striped pattern which is a cause for the deterioration of picture quality in the error diffusion method is prevented. In the present invention, an original image is read and image data are generated. The image data obtained by reading the original image are quantized by an error diffusion method, and the quantized image data are output and recorded by a thermal-head printer. Furthermore, according to the present invention, an error between the density of an input image and the density of an output image after subjected to a quantization processing by an error diffusion method is perfectly preserved. In an image processing apparatus for performing a quantization by dispersing an error between input image data and output image data when the input image data are quantized to image data of surrounding picture elements, an error between the input image data and the output image data is operated, the operated error is subjected to a predetermined weighing processing, the error subjected to the weighing processing is dispersed to surrounding picture elements, and a surplus of the error generated at the weighing processing is corrected.
摘要翻译： 根据本发明，当通过误差扩散方法对图像数据进行量化处理时，防止了误差扩散方法中造成图像质量恶化的条纹图案的产生。 在本发明中，原始图像被读取并且图像数据被生成。 通过读取原始图像获得的图像数据通过误差扩散方法量化，并且量化的图像数据由热头打印机输出和记录。 此外，根据本发明，通过误差扩散方法进行量化处理之后，输入图像的密度和输出图像的密度之间的误差被完好地保留。 在用于当输入图像数据量化为周围图像元素的图像数据时通过在输入图像数据和输出图像数据之间分散误差来执行量化的图像处理装置中，操作输入图像数据和输出图像数据之间的误差 对所操作的错误进行预定的称量处理，将经过称量处理的错误分散到周围的图像元素，并且校正在称量处理中产生的多余的错误。
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公开(公告)号：EP0341984A2
公开(公告)日：1989-11-15
申请号：EP89304685.4
申请日：1989-05-09
IPC分类号： H04N1/40
CPC分类号： H04N1/4057 , H04N1/40025
摘要： According to the present invention, when image data are subjected to a quantization processing by an error diffusion method, the generation of a striped pattern which is a cause for the deterioration of picture quality in the error diffusion method is prevented. In the present invention, an original image is read and image data are generated. The image data obtained by reading the original image are quantized by an error diffusion method, and the quantized image data are output and recorded by a thermal-head printer.
Furthermore, according to the present invention, an error between the density of an input image and the density of an output image after subjected to a quantization processing by an error diffusion method is perfectly preserved. In an image processing apparatus for performing a quantization by dispersing an error between input image data and output image data when the input image data are quantized to image data of surrounding picture elements, an error between the input image data and the output image data is operated, the operated error is subjected to a predetermined weighing processing, the error subjected to the weighing processing is dispersed to surrounding picture elements, and a surplus of the error generated at the weighing processing is corrected.摘要翻译： 根据本发明，当通过误差扩散方法对图像数据进行量化处理时，防止了在误差扩散方法中导致图像质量劣化的条纹图案的产生。 在本发明中，读取原始图像并生成图像数据。 通过误差扩散法对通过读取原始图像获得的图像数据进行量化，并且通过热敏头打印机输出记录量化的图像数据。 此外，根据本发明，通过误差扩散方法对输入图像的浓度和经过量化处理后的输出图像的浓度之间的误差进行了良好的保留。 在图像处理装置中，当输入图像数据被量化为周围图像元素的图像数据时，通过将输入图像数据和输出图像数据之间的误差分散来进行量化，输入图像数据和输出图像数据之间的误差被操作 对所操作的误差进行预定的称重处理，将经过称量处理的误差分散到周围的图像元素，校正在称量处理中产生的多余的误差。
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