Figure image width dynamic range compression device

Figure image width dynamic range compression device

  • CN 205,809,921 U
  • Filed: 05/12/2016
  • Issued: 12/14/2016
  • Est. Priority Date: 05/12/2016
  • Status: Active Grant
First Claim
Patent Images

1. a figure image width dynamic range compression device, it is characterised in that described device includes:

  • Computing module, is used for receiving image pixel, and calculates the local average of the original luminance value of described image pixel;

    Transfer function module, is connected with described computing module, for obtaining described image pixel according to described local mean value computationTransfer function;

    Compression module, is connected with described transfer function module, for receiving the described image pixel of input, and according to described conversionThe original luminance value of described image pixel dark space is strengthened by function, carries out the original luminance value in described image pixel clear zoneDecay, obtains the first brightness value after being compressed by described original luminance value;

    Contrast-enhancement module, is connected with described computing module and described transfer function module, for according to described local averageWith described transfer function, the described original luminance value of described image pixel is carried out contrast enhancing, obtain described original brightnessValue carries out enhanced second brightness value of contrast;

    First synthesis module, is connected with described contrast-enhancement module and described compression module, for by described first brightness valueSynthesize with described second brightness value, obtain carrying out described first brightness value enhanced 3rd brightness value of contrast;

    Second synthesis module, is connected with described first synthesis module, for receiving the described original luminance value of described image pixel,And described 3rd brightness value and described original luminance value are synthesized, obtain the 4th brightness value that nature is excessive.

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