Canon Kabushiki Kaisha

Mitsuru Owada

Yoshitake Nagashima

Makoto Gohda

Takeo Kimura

Motokazu Kashida

Shinichi Yamashita

Akio Fujii

Yoshiki Ishii

Masahiro Ando

Mizuho Tajima

Takashi Kimura

Katsuji Yoshimura

Shingo Ikeda

Yushi Kaneko

Mizuki Muramatsu

Keiichi Fukuzawa

Hirofumi Nakajima

Toshihiro Yagisawa

There is provided an image processing apparatus including a converting unit for converting a level range of an input image signal into a predetermined level range, and an outputting unit for outputting the converted image signal and first identification information which indicates the predetermined level range, the first identification information being correlated with the converted image signal.

Image processing apparatus and image processing method

In a decoding method of decoding encoded image data which has been hierarchically encoded in advance, a size of an image to be outputted is determined, and then the encoded image data is decoded up to a layer of hierarchy which is at least one layer more than a minimum number of layer/layers of hierarchy necessary to acquire an image of the determined size.

Resolution conversion upon hierarchical coding and decoding

The subject matter of the invention is to add information to image data of multicolor image and monochromatic image. An image processing apparatus capable of adding information on raw data performs a dispersion conversion on the spectrum of the additional information by multiplying a code sequence of the PN sequence generatorby the additional data which is inputted from the input terminaland converted into serial data in P/S converter. At this time, the data sequence transmitted from the image signal processorto the printer engineis converted by the scan converterto correspond to the spatial axis for desperation. The converted data sequence is added to the output from the adderby the adder, and reconverted to the original scan by the scan inverter

Image processing apparatus and method thereof

A focus detection device includes a plurality of light receiving sensors having sensitivity characteristics such that their respective visible spectra have different wavelength regions, a focus detection circuit which performs focus detection based on an output of any one of the light receiving sensors, and a determination circuit which determines whether or not the focus detection result is appropriate. If the determination circuit determines that the result is not appropriate, the focus detection circuit performs focus detection based on the output of another light receiving sensor.

Focus detection device and distance measurement device

The subject matter of the invention is to add information to image data of multicolor image and monochromatic image. An image processing apparatus capable of adding information on raw data performs a dispersion conversion on the spectrum of the additional information by multiplying a code sequence of the PN sequence generator by the additional data which is inputted from the input terminal and converted into serial data in P/S converter . At this time, the data sequence transmitted from the image signal processor to the printer engine is converted by the scan converter to correspond to the spatial axis for desperation. The converted data sequence is added to the output from the adder by the adder , and reconverted to the original scan by the scan inverter

Image processing apparatus and method for extracting predetermined additional information from digital image data representing an original

Color space conversion and correction processing are performed on inputted R, G and B image data 1 by an RF converter 2, and Y, M, C and K image data 3 is obtained. In the case where Y, M, C and K or Y, M and C image data is directly inputted, the RF converter 2 is passed through without being processed. Inverse processing is performed on the Y, M, C and K image data 3 by a conversion table 6 where a conversion table is set in advance, and the original R, G and B image data is obtained. An image recognition circuit 7 recognizes an image on the basis of the R, G and B image data outputted from the conversion table 6. By virtue of the above process, when an image of a specified document is to be recognized, image recognition can be performed with high precision on the basis of R, G and B image data where inverse conversion has been performed on Y, M, C and K image data or Y, M and C image data.

Image processing apparatus and method

A video signal recording apparatus for recording video signals while forming m number of tracks per frame on a recording medium by using n number of rotary heads, m being an integer greater than n with n an integer of 2 or more. The apparatus is arranged to record tracking control signals cyclically on every n number of tracks.

Video signal recording apparatus

An apparatus for recording video data by forming many tracks on a recording medium and/or for reproducing the video data from the tracks is provided with a memory which is arranged to have recording video data or reproduced video data supplied thereto. The apparatus detects the picture change-over portion of the video data obtained within the tracks and controls, in accordance with the detected position, an offset degree between the writing and reading addresses of the memory.

Video data recording and/or reproducing apparatus

An apparatus and method for adding information to image data of a multicolor image and a monochromatic image includes the performing of a dispersion conversion on the spectrum of additional information to be added to the image data by multiplying a code sequence of a PN sequence generator by the additional data which is inputted from an input terminal and converted into serial data in a P/S converter. At this time, the data sequence transmitted from an image signal processor to a printer engine 107 is converted by a scan converter to correspond to the spatial axis for dispersion. The converted data sequence is added to the output from an adder by another adder 110, and reconverted to the original scan by a scan inverter.

Image processing apparatus and method for synthesizing first and second

The disclosure presents an image encoding device which changes a position of a partial area in which there are pixels encoded by using only pixels in the present picture at intervals, or an image encoding device which decides the partial area such that the partial area is a continuous area in a picture. Accordingly, the device efficiently prevents to spread errors, can avoid frequent deteriorations of images, and can improve a quality of encoded images.

Image encoding device

Video data recording and/or reproducing apparatus with control of

An apparatus for correcting a time base of a video signal generates a clock which is phase-synchronized with a sync. signal of the video signal and has the same frequency. In a special reproducing mode, the apparatus switches an output level of a phase comparator, which phase-compares the sync. signal and the clock to a predetermined level, which is applied to a controlled oscillator and resets a frequency divider which frequency-divides the output of the controlled oscillator, in accordance with the sync. signal to produce the video signal which can be visually recognized even in the special reproducing mode. The apparatus samples and holds the output level of the phase comparator when the video signal drops out and resets the frequency divider which produces the clock by frequency-dividing the output of the controlled oscillator, when the dropout is recovered so that a video signal of high quality is produced immediately after the recovery of the dropout of the video signal.

Growing community of inventors

Yokohama, Japan

Mitsuru Owada