Patent
Ink use amount evaluation apparatus and method, and inkjet apparatus
TLDR
In this paper, the ink use amount in image formation is predicted from reduced image data which is generated from the input image data, rather than using the second LUTs directly.Abstract:
When image is formed by a liquid ejection head, input image data is subjected to conversion processing including tone conversion using a first look-up table (LUT) and density correction or non-uniformity correction in nozzle units using second LUTs. Ink use amount in image formation is predicted from reduced image data which is generated from the input image data. In this, the calculation is made more efficient by applying a third LUT which is compiled according to requirements from the second LUTs, to the reduced image data, rather than using the second LUTs directly. Since the image conversion processing is carried out which combines the first LUT for tone conversion and the third LUT corresponding to the non-uniformity correction, and the ink amount distribution data is calculated from the reduced image data after the conversion, then it is possible to ascertain an accurate ink amount which reflects the image adjustment conditions.read more
Citations
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Patent
Image processing method and inkjet recording apparatus
TL;DR: In this article, an image processing method includes: forming an image for density unevenness measurement on a recording medium in a single-pass method, using an inkjet head in which nozzles are disposed in a main scanning direction, acquiring a density measurement value of each set gradation value from an image, before drying; converting the acquired value into a conversion density measurement values corresponding to a post-dry density measurements value.
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TL;DR: In this paper, the amount of ink which is predicted to be consumed by printing of an image represented by the corrected image data is calculated, based on job information included in the print job.
References
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Camera-based document scanning system using multiple-pass mosaicking
TL;DR: In this article, a camera-based document scanning system produces electronic versions of documents, based on a plurality of images of discrete portions of the documents, and the system utilizes the derived motion parameters to align and merge each image with respect to the previous images, thereby building a single, mosaic image of the document.
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Nobutaka Miyake,Yusuke Hashii,Makoto Torigoe,Ryosuke Iguchi,Tetsuya Suwa,Minako Kato,Hiromitsu Akiba +6 more
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