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Color image pickup apparatus

A technology for color imaging and imaging components, applied in the field of signal processing, can solve problems such as image blur, and achieve the effect of suppressing blur, reducing computational complexity and high resolution

Inactive Publication Date: 2004-11-10
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the luminance value of the pixel 311 and the like are used when generating the luminance value of the pixel 306, it becomes affected by very distant pixels.
Therefore, the value of the newly created pixel obtained by the interpolation process means that the image in a wide range is smoothed as a result, and there is a problem that the image is blurred.

Method used

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  • Color image pickup apparatus

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no. 1 Embodiment

[0047] use figure 1 , Figure 5 to Figure 8 A color imaging device according to a first embodiment of the present invention will be described.

[0048] exist figure 1 Among them, 101 is an optical system, which makes the object to be imaged on the surface of CCD 102 . The CCD of 102 converts the imaged subject image into an electrical signal, puts a color separation filter on each element, and takes out the color information. The filter transmission signal 103 output from the CCD 102 is an analog quantity, and each element of the CCD 102 has a voltage value corresponding to the filter transmission signal, that is, the light intensity passing through its dichroic filter. 104 is an A / D converter, which digitizes the analog signal 103 and converts it into a digital signal 105 with 256 gray levels of 0-255 for each pixel. 106 is for the purpose of communicating with surrounding pixels in the signal processing shown below. Operation, store the above-mentioned digital signal 1...

no. 2 Embodiment

[0096] use below Figure 4 to Figure 6 , Figure 9 , Figure 10 A color imaging device according to a second embodiment of the present invention will be described. Figure 4 is a block diagram of a color imaging device according to a second embodiment of the present invention. Furthermore, if Figure 4 As shown in , the configuration of the color imaging device according to the second embodiment is the same as that of the above-mentioned first embodiment except for the resolution conversion circuit 401 . Therefore, here, the resolution conversion circuit 401, which is a different part from the color imaging device according to the first embodiment, will be described, and descriptions of components other than the resolution conversion circuit 401 will be omitted.

[0097] Figure 9 It is an explanatory diagram for explaining interpolation processing performed by the resolution conversion circuit in the color imaging device according to the second embodiment of the present ...

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Abstract

A color image pickup apparatus for producing a good blur-free image through a very small amount of calculation, comprising an image pickup element having a color separation filter where four pixels adjacent to each other horizontally and vertically constitute one array pattern, a memory circuit for storing therein the filter transmission signal of each pixel from the image pickup element, a signal processing circuit for determining the luminance value and color difference signals of each pixel using the filter transmission signal thereof stored in the memory circuit, and a resolution converting circuit for performing interpolation using the luminance value and color difference signals from the signal processing circuit and the filter transmission signal of each pixel outputted from the image pickup element to generate luminance value and color difference signals of a pixel to be newly formed.

Description

technical field [0001] The present invention relates to a color imaging device, and in particular to signal processing for obtaining a higher resolution by processing a filter transmission signal read from a color imaging element. Background technique [0002] Conventionally, in order to improve the resolution of image signals from color imaging elements such as CCDs, the filter transmission signals from each CCD element with a color filter are calculated with surrounding pixels to generate the luminance at each position of each CCD element. After the signal, use these luminance information to carry out resolution conversion. use below figure 2 A conventional CCD and its signal processing will be described. [0003] figure 2 It is a block diagram of a conventional color imaging device. In the figure, 201 is an optical system, which makes the object to be imaged on the surface of CCD 202 . The CCD of 202 converts the imaged subject image into an electrical signal, and pu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N23/12
CPCH04N9/045H04N25/133H04N23/843H04N25/134H04N23/00
Inventor 宝田真一
Owner PANASONIC CORP