Image data processing apparatus and method of processing image data
An image data and data technology, which is applied in the field of image data processing devices, can solve the problem that the gamma correction of the displayed image cannot be guaranteed, and achieve the effect of suppressing the influence of noise
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no. 1 example
[0049] figure 1 is a block diagram showing the configuration of a first example image data processing apparatus according to the present invention. figure 1 The illustrated example apparatus 10 includes: a brightness characteristic detection circuit 1 , a correction parameter setting circuit 2 , and a display data generation circuit 3 . A luminance characteristic detection circuit 1 detects luminance characteristics of input image data. According to the luminance characteristics detected by the detection circuit 1, the correction parameter setting circuit 2 sets correction parameters. The display data generation circuit 3 corrects the input image data using the correction parameters set by the correction parameter setting circuit 2, and generates display data to be output to the display device. The correction parameter setting circuit 2 and the display data generating circuit 3 constitute a correction circuit 4 .
[0050] figure 2 is a block diagram showing the configurat...
no. 2 example
[0088] In the first example embodiment, the brightness characteristics or accumulated brightness values of all pixel blocks are used equally in determining the brightness characteristics of the frame. That is, the accumulated luminance values of all pixel blocks are compared with each other to obtain a maximum luminance value or a minimum luminance value without performing different processing on them. However, an index to be considered when comparing the luminance characteristics of pixel blocks may be set.
[0089] Figure 7 is an example block diagram showing another example embodiment of the luminance characteristic detection circuit 1 . In this example embodiment, a valid bit is set to a pixel block as an index and stored in the valid bit memory 17 . In order to use the valid bits, necessary valid bits are read from the valid bit memory 17 and stored in the valid bit register 18 . The valid bits stored in the valid bit register 18 control the maximum value register...
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