Images captured from image sensors are affected by noise. Impulse noise is the most common type ofnoise, also called salt-and-pepper noise. . It is caused by malfunctioning pixels in camera sensors, faulty memory locations in the hardware, or errors in data transmission. Image denoising plays a vital role in digital image processing. Many schemes are available for removing noise from images. A good denoising scheme retrieves a clearer image even if the image is highly affected by noise.
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Features and Benefits
- Video Data Handling :
- Uses four one-line buffers to store one horizontal video line each.
- The incoming data stream fills these buffers sequentially.
- Filtering Process :
- The core filter is implemented on a 3x3 matrix..
- A 3x3 window for median calculation is formed using three video lines.
- Three pixels from each of the three video lines are read into shift registers to form a 3x3 2D array.
- This array serves as the input for the unsharp masking kernel.
- Color Channel Operations :
- Median filtering is applied exclusively to the Y (luminance) channel..
- The Cb and Cr (chrominance) components are passed through delay registers to ensure they are synchronized with the Y channel.
Licensing Options
Encrypted RTL free with any Libero license
Documentation
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| Microsemi_SmartFusion2_Image_Denoising_Filter_User_Guide_UG0643.pdf | Download |