摘要:
Coding processing performed by an image coding device (100) includes: processing (S133) of performing coding by leaving surplus bit(s), when the digit number B of binary data of the difference value between (a) a value of a to-be-coded pixel and (b) a prediction value is smaller than the predetermined bit number M; and processing (S133) of performing coding by using the surplus bit(s), when the digit number B is greater than M and there are the surplus bit(s). Pieces of coded data each having a predetermined coding amount are generated, by performing processing for each of consecutive T pixels so as to perform the coding processing for each of U pixels among the consecutive T pixels (S136).
摘要:
An image processing device for performing image processing for an image signal output from an image sensor, including: a preprocessing circuit for generating a correction signal based on the image signal from the image sensor; a signal processing circuit for correcting the image signal using the correction signal and converting the corrected signal to a luminance signal and a color-difference signal; and a control block. The control block performs either first processing in which the signal processing circuit uses the correction signal generated based on an image of a frame preceding the frame of an image currently supplied to the signal processing circuit, or second processing in which the image signal obtained from the image sensor is stored in an external memory, the stored image is read and supplied to the signal processing circuit, and the signal processing circuit uses the correction signal generated based on the image of the same frame as the supplied image.
摘要:
[PROBLEMS] suppress deterioration in picture qualities while achieving expansion in a dynamic range. [MEANS FOR SOLVING PROBLEMS] An image sensor readout method that reads out, from an area sensor where a plurality of image pickup elements are arranged in matrix, signal charges that are accumulated in the image pickup elements is constituted as follows. First, plural kinds of exposure time different in length from each other are set, and the exposure time is then individually allocated to each line of the area sensor. Next, the signal charges accumulated in the image pickup elements in the allocated exposure time are read out through a line unit of the area sensor. Then, the read out signal charges are synthesized through a screen unit of the area sensor.
摘要:
The solid-state image pickup element comprises a filter film made of a single-layer inorganic material which exhibits a maximum value at a specific wavelength on transmission spectra of incident light in accordance with a film thickness thereof, and a photoelectrical conversion part for generating a signal charge in accordance with light quantity of the incident light transmitted through the filter film. For the filter film, a number of the filter films of at least two kinds having different film thickness is provided, and a number of the filter films are arranged in parallel based on a prescribed arrangement. Image pickup signals outputted from the solid-state image pickup element are signal-processed by a signal processor. The signal processor generates at least one of the signals that correspond to a luminance signal, a color signal, a color difference signal, and light quantity of incident light by applying color conversion processing on the image pickup signal in accordance with the prescribed arrangement.
摘要:
A solid-state imaging device includes a plurality of photoelectric conversion elements configured to perform photoelectric conversion on incident light. The device also includes a color filter array including at least three kinds of color filters different in filtering wavelength region. Any of the color filters is placed for each of the photoelectric conversion elements to filter the incident light. The spectral transmittances of the color filters are equal to each other in a predetermined wavelength region.
摘要:
Suppress deterioration in picture qualities while achieving expansion in a dynamic range.An image sensor readout method that reads out, from an area sensor where a plurality of image pickup elements are arranged in matrix, signal charges that are accumulated in the image pickup elements is constituted as follows. First, plural kinds of exposure time different in length from each other are set, and the exposure time is then individually allocated to each line of the area sensor. Next, the signal charges accumulated in the image pickup elements in the allocated exposure time are read out through a line unit of the area sensor. Then, the read out signal charges are synthesized through a screen unit of the area sensor.
摘要:
An imaging device includes a plurality of pixels each configured to convert incident light to an electric charge signal and output the electric charge signal as a pixel signal, and a pixel binning unit configured to bin pixel signals from pixels adjacent to each other and output the binned pixel signal. The pixel binning unit performs first pixel binning operation of binning pixel signals from pixels on the same column and second pixel binning operation of binning pixels on the same row.
摘要:
A solid state imaging device of the present invention comprises a solid state imaging element which includes a plurality of photoelectric conversion elements arranged in a matrix. In the solid state imaging device of the present invention, a pixel mixture unit area includes q pixels (q is a natural number equal to or greater than 2) in the first direction of the solid state imaging element and p pixels (p is a natural number equal to or greater than 2) in the second direction that crosses the first direction. The solid state imaging device includes: means for performing a first-field pixel addition process of adding together electric charges of a plurality of pixels included in the plurality of pixel mixture unit areas and a second-field pixel addition process of adding together the electric charges of the plurality of pixels included in the plurality of pixel mixture unit areas based on a combination of the pixel mixture unit areas which is different from that of the first-field pixel addition process; and means for alternately outputting signals of the electric charges obtained in the first-field pixel addition process and second-field pixel addition process as signals for interlaced scanning.
摘要:
A microcomputer outputs correction data. A shading correction circuit performs a shading correction to a digital image signal using the correction data outputted from the microcomputer. A YC processing circuit generates a video signal from the digital image signal having undergone the shading correction, performs processing such as a gamma correction to the generated video signal, and outputs the video signal having undergone the processing such as the gamma correction.
摘要:
A reference charge generator provided on an image capture element generates reference charge. The reference charge is transferred through a vertical transfer section as is signal charge of a pixel which is generated by a photoelectric converter. A reference signal corresponding to the reference charge is output from the image capture element. Data of a digital value obtained by conversion from the reference signal and a digital value which is obtained from the reference signal when the image capture element ideally operates are compared to estimate the state of a pulse for driving the image capture element. The state of the pulse is adjusted such that the pulse has optimum phase and duty.