Image color correction method and device based on FPGA
A color correction and image technology, applied in image communication, solid-state image signal generator, color TV and other directions, can solve the problems of loss of image details, large color space conversion error, etc., to reduce rounding errors and improve dark details. Effect
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Embodiment 1
[0033] This embodiment provides an image color correction method based on a programmable logic device FPGA, figure 2 It is the flowchart of the image color correction method based on FPGA of the embodiment of the present invention, as figure 2 As shown, the process includes the following steps:
[0034] Step S1: performing color space conversion on the input image data to obtain converted multi-channel A-bit data;
[0035] Step S2: Take the high B-bit data of each A-bit data of the multi-channel A-bit data to look up the table, and obtain data whose bit widths of at least two adjacent addresses are all C bits;
[0036] Step S3: Perform an interpolation operation on the low D-bit data of each A-bit data, and at least two adjacent addresses corresponding to the high B-bit data of each A-bit data with a bit width of C bits to obtain output image data ; Wherein, A, B, C, D are natural numbers, B+D=A, B>C.
[0037] Through the above steps, only the high B-bit data of each A-bit ...
Embodiment 2
[0044] This embodiment provides an image color correction device based on a programmable logic device FPGA, image 3 Be the structural block diagram (1) of the image color correction device based on FPGA of the embodiment of the present invention, as image 3 As shown, the device includes: a first color space conversion module 32, which is used to perform color space conversion on the input image data to obtain converted multi-channel A bit data; a table look-up module 34, used to obtain the multi-channel A bit data; The high B-bit data of each road A-bit data of bit data is looked up table, obtains the data that the bit width adjacent to at least two addresses is C-bit; Interpolation operation module 36, is used for the low D bit data, and at least two adjacent addresses corresponding to the high B-bit data of each A-bit data are C-bit data for interpolation operation to obtain output image data; where A, B, C, D are natural numbers , B+D=A, B>C.
[0045] Figure 4 Be the ...
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