Histogram is traditionally used to show a set of data graphically. In the video and image processing domain, the histogram is used to visualize the distribution of pixel intensities in an image or a video frame. For an image with an 8-bit wide pixel, 256 intensity values are possible ranging from 0 to 255. The histogram will show how many times a pixel of particular intensity occurs in the entire image. Histograms are useful to understand the exposure and light distribution of the image and possibly correct it in image processing.
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Features and Benefits
- Histogram Generation:
- Generates 256-bin histograms for 8-bit color channels (red, green, blue).
- The IP core is optimized for video applications.
- Video Interface
- Uses a simple, generic video interface to accept incoming pixel data and control signals like pixel_valid.
- Registers and Control
- Provides status and control registers for the IP core.
- A 'capture' bit is used to initiate a histogram capture, and a 'done' bit signals the completion of the process.
- Memory Interface
- Uses a simple memory interface to provide access to the histogram data.
- Optimization and Resource Usage
- The IP core is completely self-contained, meaning it doesn't require an external CPU to function.
Licensing Options
Encrypted RTL free with any Libero license
Documentation
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| Microchip_Polarfire_FPGA_Histogram_IP_User_Guide_UG0944.pdf | Download |