Sage-Tips

How do I display an image in Verilog?

First of all, Verilog cannot read images directly. hex file. The input image size is 768×512 and the image . hex file includes R, G, B data of the bitmap image. To read the image hexadecimal data file, Verilog uses this command: $readmemh or $readmemb if the image data is in a binary text file.

How do you read and write text file in Verilog?

Read Files

1. module tb;
2. reg[8*45:1] str;
3. integer fd;
4. initial begin.
5. fd = $fopen(“my_file.txt”, “r”);
6. // Keep reading lines until EOF is found.
7. while (! $feof(fd)) begin.
8. // Get current line into the variable ‘str’

What is FPGA image?

FPGA image processing performs compute-intensive video and image processing using dedicated hardware that delivers low latency and high throughput computation. These techniques often involve pre-processing an incoming video stream for further processing in software or a deep learning network.

Why do we use Verilog?

Verilog is a Hardware Description Language; a textual format for describing electronic circuits and systems. Applied to electronic design, Verilog is intended to be used for verification through simulation, for timing analysis, for test analysis (testability analysis and fault grading) and for logic synthesis.

How do I read hexadecimal data from an image in Verilog?

To read the image hexadecimal data file, Verilog uses this command: $readmemh or $readmemb if the image data is in a binary text file. After reading the image .hex file, the RGB image data are saved into memory and read out for processing. Below is the Verilog code to the image reading and processing part:

What is the use of image reading and writing in Verilog?

The image reading Verilog code operates as a Verilog model of an image sensor/ camera, which can be really helpful for functional verifications in real-time FPGA image processing projects. The image writing part is also extremely useful for testing as well when you want to see the output image in BMP format.

How to implement image processing in FPGA using Verilog?

In this FPGA Verilog project, some simple processing operations are implemented in Verilog such as inversion, brightness control and threshold operations. The image processing operation is selected by a “parameter.v” file and then, the processed image data are written to a bitmap image output.bmp for verification purposes.

How to read an image file into FPGA?

If you want to read the file into FPGA, i.e. synthesizable, you should convert the image into .bin file and load it into the Block ROM. You can use IP core of xilinx to create block ROM according to your image size.