Fujifilm Corporation

Fuji Photo Film Company, Limited

Kenji Funamoto

Kenji Ito

Hiroyuki Kurase

Toshifumi Akiyama

A digital camera has a live-view image shooting mode in which a process of shooting a subject, generating image data from imaging signals acquired by the shooting, and displaying a live-view image based on the image data on a display section is repeatedly performed. The digital camera includes a solid-state imaging devicethat shoots the subject, a live-view processing sectionand a display control section. The live-view processing sectionperforms different image processings for imaging signals of two groups to generate two pieces of image data. The imaging signals of the two groups are obtained when imaging signals, which are output from the solid-state imaging devicein single shooting in the live-view image shooting mode, are divided into the two groups. The display controller displays, on the display section, a screen which includes two live-view images based on the two pieces of image data.

Imaging apparatus and live-view image display method thereof

The image capturing apparatus includes: a taking optical system which includes a focusing lens; an imaging unit which receives a subject light through the taking optical system and converts the subject light to image data representing frame images; a face detection unit which detects a face region of a person in a first frame image that is one of the frame images sequentially supplied by the imaging unit; a face detection setting unit which sets, for the face detection unit, a position and a size of a face region detection area in a second frame image supplied after the first frame image by the imaging unit, in accordance with a position and a size of the face region detected by the face detection unit in the first frame image; a focus region defining unit which defines, in accordance with a position and a size of the face region detected by the face detection unit in the second frame image, a focus evaluation value calculation region in a third frame image supplied after the second frame image by the imaging unit; a calculation unit which calculates a focus evaluation value in accordance with the image data in the focus evaluation value calculation region defined by the focus region defining unit in the third frame image; and a focus adjustment unit which adjusts a focus of the focusing lens in accordance with the focus evaluation value calculated by the calculation unit.

Image capturing apparatus and focusing method with focus evaluation

A shading compensation device which compensates for shading which differs for respective colors. A pixel counter counts co-ordinate positions of image data which is supplied from a black level correction section. A relative position calculation section compares the image data with compensation value tables and calculates relative co-ordinate positions of pixels which are objects of processing. A compensation value interpolation section refers to the compensation value tables, which are stored for the respective colors in a compensation value table memory, and interpolates shading compensation values for the relative co-ordinate positions calculated by the relative position calculation section. A multiplier multiplies the image data which is the objects of processing with the new shading compensation values obtained by the interpolation processing. Thus, shading-compensated image data is generated.

Shading compensation device, shading compensation value calculation device and imaging device

An image display apparatus that includes: a display screen having a touch panel function on which an image is displayed with operation buttons superimposed on the image, and a switching detection means for detecting a display switching operation for switching the display of the image from the display screen to an external device. When the display switching operation is detected by the switching detection means, the following is performed: the display of the image on the display screen is terminated and image data for displaying the image with the operation buttons superimposed on the image are outputted to the external device from the output terminal; the position information of a touched position on the display screen is detected; and one of the operation buttons displayed on the external device is selected according to the detected position information.

Image display apparatus, and image display method

A digital camera and a image signal generating method capable of generating both an image signal for displaying an object image and additional information on a display component. and an image signal to be supplied to a connected external display device, with a simple configuration. Video additional information data is generated which includes in the period corresponding to the horizontal blanking period of the composite video signal digital data representing additional information to be displayed with the object image on the LCD, and in the period corresponding to the video period of the composite video signal digital data representing the object image. The digital data in the period corresponding to the horizontal blanking period is masked and a horizontal synchronizing signal and color burst are superimposed.

Digital camera and image signal generating method

A clock signal generating circuit is disclosed. The clock signal generating circuit includes: a reference clock signal generating unit for generating a reference clock signal; a plurality of frequency dividing units for carrying out frequency dividing of the reference clock signal and outputting frequency-divided clock signals; a plurality of frequency division ratio storing units for storing frequency division ratios different from each other for the respective frequency dividing units; and a switching unit for switching, synchronously with the reference clock signal, at least one initial frequency division ratio at the frequency dividing units to the frequency division ratios stored in the corresponding frequency division ratio storing units.

Clock signal generating circuit, semiconductor integrated circuit and method for controlling a frequency division ratio

The present invention discloses a digital image pickup apparatus. The digital image pickup apparatus reads digital image data from a main memory in a horizontal direction. The digital image pickup apparatus corrects an optical distortion component in the horizontal direction in the digital image data. The digital image pickup apparatus writes the digital image data into the main memory in the horizontal direction, so as to store it without changing the direction. The digital image pickup apparatus further reads the digital image data from the main memory in a vertical direction. The digital image pickup apparatus corrects an optical distortion component in the vertical direction in the digital image data. The digital image pickup apparatus writes the digital image data into the main memory in the vertical direction, so as to store it without changing the direction.

Digital image data correction apparatus, digital image data correction method and digital image pickup apparatus

When an nth frame of encoded data is stored in a compressed-data storage area that stores 15 frames of encoded data, a target amount of code of the nth frame is decided so as to become a value that is the result of dividing the residual capacity of an area remaining in the compressed-data storage area by the number of remaining images to be stored in this remaining area. This makes it possible to prevent the target amount of code from becoming very large or very small. Even if there is a change in a photographic scene, therefore, a drastic change in image quality from frame to frame can be prevented.

Image data compressing apparatus

A memory device is so adapted that data processing time is not prolonged even when there is little bus width. A DRAM is connected to first to third buffer circuits by buses, which have a bus width of 128 bits, via a selector. The first to third buffer circuits are connected to a circuit such as a signal processing circuit by buses having a bit width of 32 bits. Since part of the circuitry is connected by buses having a bit width of 32 bits, the wiring is simple. By executing various processing in parallel, it is possible to prevent prolongation of the time required to record image data on a memory card.

Memory device

In a moving image display mode, CPU commands a selector to input an output signal of a frequency divider to a signal processing part as a synchronous signal. In case of a CCD with G-stripe or Bayer arrangement, the frequency divider divides the frequency of a clock by an odd number (for example, 3 or 5) and the frequency-divided clock is inputted to the signal processing part. This thins out the pixels of image data to {1/(an odd number)} and the image data is inputted to the signal processing part without changing the arrangement of the pixels. The inputted image data is processed at the signal processing part, and then is outputted to the liquid crystal monitor, which displays a moving image.

Image processing unit

A method and an apparatus for controlling the quantity of codes representative of image data are disclosed. Image data representative of a single scene are thinned and then subjected to orthogonal transform in order to generate transform coefficients. The transform coefficients are normalized in accordance with the initial value of a normalization factor and then coded by compression. The quantity of the resulting codes is compared with a first target value. A value of the normalization factor corresponding to the first target value is calculated on the basis of the result of the above comparison in accordance with a relation between the normalization factor and the quantity of codes. Subsequently, the entire image data representative of a single scene are subjected to orthogonal transform, and the resulting transform coefficients are normalized by the above value of the normalization factor. The transform coefficients normalized by this normalization are coded by compression. The quantity of the resulting codes is compared with a second target value. A value of the normalization factor corresponding to the second target value is calculated on the basis of the result of the comparison using the second target value. The value corresponding to the second target value is used to repeat the normalization of the transform coefficients and coding. Such a procedure is repeated until the count of the compressed data satisfies the second target value within a preselected range.

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Asaka, Japan

Kenji Funamoto