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Why not read the vhdl language reference? It tells that image and VALUE attribute can be applied to scalar types and its subtypes. Std_logic_vector isn't a scalar, it's a bit array.
read data (pixels) check against the ranges for the bins, increment the bin count (another memory) that has a range that matches the pixel, display the resulting counts on the monitor. Of course this is probably what you were supposed to "design" (i.e. figure out on your own).
you can try storing the images in a text file and read them in you vhdl code if its just needed to simulate your algorithm in xilinx ISE. if you are planning to do an implementation on a FPGA you need other memory and your BRAM memory is not sufficient to store a single channel of a single image.
hi im trying to make an image processor using virtex5, and im using modelsim for simulation tool. my question is, in testbench file, how to read multiple sequential images? i can open and read 1 frame image but dont know how to do when the next frame is needed. this is part of my test bench code (...)
hi I'm new in the vhdl world.. I'm writing a vhdl code that do some image processing (image need to read the image from some RAM.the image is in gray scale(each pixel is an 8bit). i have a vhdl model that read from external DRAM( i (...)
Here are some ideas: 1) Do an internet search for articles on image processing with vhdl 2) read a book on the subject. 3) Ask a more specific question; image processing is a pretty broad topic.
You cannot compile a .coe file into external memory - you will need some mechanism to read data into there.
You didnt post the error still - post the whole error. Also - Modelsim 5.5 is very old (at least 8 years now). - - - Updated - - - Having another quick look - its probably because you have no waits in your process. It reads the image in zero time and then tries to read it again (and will keep reading it an infinite number
my project is based on image processing implementation in vhdl. so i am in need of processing pixel values in verilog . can anyone help me, how to read the pixel value in verilog. With thanks, J.Dharani
No I will not. I will however suggest googling on something like "xilinx read .coe file format vhdl" because the information on how to do that is absolutely trivial to find on this here fine internet.
BMP is useful format for input and output iv vhdl. You can write the procedures to read and write such a file using the shared variables.
Hello Dears I want a vhdl test code for reading an image and then view the processed one. I google it and know about the textio package but don't know how to use it exactly. please explain about it and about the type of images that vhdl test code can read or write. Regards Mostaa
Hi, I try simulate testbench code for read text image data. I have includes all the package required (textio), but I get this error: "Error (10482): vhdl error at INPimage.VHD(150): object "Hread" is used but not declared" Below is the pieces of the code. Anyone know/familiar with this, please (...)
HI am doing sum of absolute difference for motion estimation in vhdl ... am dng full search algorithm .. i got problem in image processing as i have to move a block of image on refernce image .. how to read reference image as a matrix
to do what? read it in an FPGA? read it in a testbench? create one? Be more specific.
Hi all; How to write a program to output a specified image to a stream of integers in Matlab? The file later will be used as an input file in vhdl. I have found 1 example but I don't understand much. Can anyone help me..Below is the Matlab code that I make as my reference: function m2vhdl(input_bmp,output_bin); % detail: a program to (...)
dear all i have virtex 5 evaluation platform "ML505" which contains fpga connected with DVI controller "CH7301C so, i need to display image stored in block RAM on Display "lcd'. i read the data sheet of CH7301 and some application notes but still i can not start to write vhdl code for it. as i known there is some data must be passed to (...)
I like to read image from harddisk and process on FPGA and again processed image to be stored on Harddisk. So anyone can provide module/code to read and write for (vhdl code). I am using DE2 board.
hello, i have a bmp image on which i want to write an integer at a certain location, just using vhdl, without involving Matlab,,,i have been provided a code that can read the image pixelwise but i couldnt find a way to write on the image.. i wonder if somebody can guide me about it? thanks in advance
here is a attachment for conversion but its takin default values, i want the program to read values from text file n all the decimal numbers are in matrix form as they`ve been extracted from image