Best ascii art7/5/2023 ![]() ![]() ASCII's second part (characters 127-255) is now bound to language. At the start encoding was 7-bit (had 128 characters) but with time it was extended to 8-bits (256 characters). The ASCII character encoding - or a compatible extension - is used on nearly all common computers, especially personal computers and workstations. Work on ASCII started in 60s with the most recent update in 1986. ETB (end of transmission block) - Not the same as EOTīrief American Standard Code for Information Interchange (ASCII) - is a character encoding based on English alphabet.SI (shift in) - Switches output device back to default character set.SO (shift out) - Switches output device to alternate character set. On Unix systems, moves to a new lineįF (form feed) - Advances paper to the top of the next page (if theĬR (carriage return) - Moves the cursor all the way to the left, but does LF (NL line feed, new line) - Moves the cursor (or print head) to a new On the output device, but is often either 8 or 10. TAB (horizontal tab) - Moves the cursor (or print head) right to the next In many common terminals and terminal emulation programs.īS (backspace) - Moves the cursor (or print head) move backwards (left) I recommend you to remember ASCII code for "a" and "A" character code, as they're most oftenly needed.ĮOT (end of transmission) - Not the same as ETBīEL (bell) - Caused teletype machines to ring a bell. #7 bell ASCII code (computer beeps when trying to print that character) #10#13 ASCII code that indicates a new line You can type most of ASCII symbols by using Alt Codes. On second picture - you can find Russian/Ukrainian Windows console ASCII codes. the the one above) and with different scales to find out what gives better result.ASCII codes (American Standard Code for Information Interchange) as they are seen under english Windows. You can play arround with different ramps (e.g. And don't forget about line breaks.Ģ:19 - running the application for the first time to check results in the console.Ģ:33 - the smaller scale is the better results we get. Now we are ready to output every character. Notice that we are dividing the value of "average pixel" by 65536 - this is because Golang's () returns red, green and blue components as 16-bit numbers having 65536 possible values each. The funny part is - how to convert grayscale value to an ASCII character? There are some examples of greyscale ramps - you can check more details here.įor example we can use or but I decided to go with even more simple idea is - the darker color is the more "dense" ASCII character should be. The bigger scaleX and scaleY values the smaller (and with less quality) the resulting ASCII art will be. Note that we are doing some range checks here to avoid going out of the image boundaries.ġ:47 - now we can just iterate through our image and find average pixel values.īy doing some experiments I came to conclusion that the good ratio is around 2:1 to look nice on terminal screen. It will convert rectangle (x, y) - (x+w, y+h) of image img to grayscale and will find average value of all pixels in this rectangle. That's why we need to group or scale a number of pixels and replace them with one single "average" pixel. For example image 400 by 400 pixels is a rather small image, however you will not find a terminal with 400 colums or 400 rows. ![]() ![]() Therefore we need to do some type conversion here.ġ:20 - obviously one pixel of a real image cannot be mapped one-to-one to an ASCII character as ASCII character on the screen takes much more space. Note that Golang does not allow to multiply int (or in this case uint32) with float64 constants. There are several ways how to do it and in this case we will use a formula that was used for NTSC analogue television encoding system. Note that we are importing image/png package - this way we instruct Golang which decoder should be used for loading the image.įor consistency we are checking that there are no errors and the image is loaded properly.ġ:07 - define grayscale function that will convert RGB color to a grayscale component. Usually such type of images give best results for ASCII art.Ġ:40 - define loadImage function that will load image from a file system. This image is nice as it has some contrast - some light and dark areas with clear borders. Let's break down the solution and comment on some complex or interesting things.Ġ:20 - As starting point we'll use an image with Golang logo. Disclaimer: never use this code in production. ![]()
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