Mitsubishi Electric Corporation

Miki Sugano

Masako Asamura

Kohei Kurihara

Daisuke Suzuki

Yoshitaka Toyoda

Toru Aramaki

Kosaku Yamagata

Toru Aoki

A first group of interpolation calculators performing interpolation by mean preserving interpolation calculation, and a second group of interpolation calculators performing interpolation by interpolation other than the mean preserving interpolation calculation are provided. Each of the interpolation calculators performs interpolation calculation for the missing pixel to calculate an interpolation candidate value (M(h)), and calculates test interpolation values (M(t)) treating pixels in a vicinity of the missing pixel as test pixels. A decider () selects one of the plurality of interpolation calculators based on results of the test interpolation. An outputter () selects the interpolation candidate value outputted from the interpolation calculator selected by the decider (), among the plurality of interpolation candidate values (M(h)), and outputs the selected interpolation candidate value. Interpolation can be performed such that the interpolated pixel does not look unnatural, and yet the storage capacity and the data processing amount that are required are relatively small.

Pixel interpolation device and pixel interpolation method, and image processing device, and program and recording medium

A signal processing device () uses first characteristic data detected from a sheet-like detection target by a first detection element () and second characteristic data detected from the detection target by a second detection element () and having (i) a characteristic that is different from a characteristic of the first characteristic data and (ii) a correlation with the first characteristic data. The signal processing device () includes an evaluation value generator () that generates, by using the correlation with the second characteristic data, an evaluation value determining whether the first characteristic data includes an unnecessary portion, and a correction amount determiner () that determines, by using the evaluation value, for correction of data determined by the evaluation value generator () to be the unnecessary portion, a correction amount for the first characteristic data.

Signal processing device

There are provided a line sensor () including two first sensor pixel rows () and a second sensor pixel row (); an image obtaining unit () to obtain, from electrical signals obtained by scanning an original in a sub-scanning direction with the two first sensor pixel rows (), two first read image data items, and obtain, from electrical signals obtained by scanning the original in the sub-scanning direction with the second sensor pixel row (), a second read image data item; and an image processor () to incorporate one or more pixel data items of one or more pixels included in an interval between the two first sensor pixel rows () out of the second read image data item into the two first read image data items, thereby generating a line image data item in which the one or more pixels in the interval are not vacant.

Image reading device and image reading method

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Tokyo, Japan

Miki Sugano