Programming

Revisiting neural-style-tf in 2021

 in Applications / Artificial intelligence / Deep Learning / Machine Learning / Neural Networks / Programming  tagged neural style transfer / neural-style / neural-style-tf / python / python3 by

We decided to revisit this post (https://bytefreaks.net/applications/neural-style-tf-another-open-source-alternative-to-prisma-for-advanced-users) in 2021 and provide the installation manual for Ubuntu 20.04LTS.

Setup

Conda / Anaconda

First of all, we installed and activated anaconda on an Ubuntu 20.04LTS desktop. To do so, we installed the following dependencies from the repositories:

sudo apt-get install libgl1-mesa-glx libegl1-mesa libxrandr2 libxrandr2 libxss1 libxcursor1 libxcomposite1 libasound2 libxi6 libxtst6;

Then, we downloaded the 64-Bit (x86) Installer from (https://www.anaconda.com/products/individual#linux).

Using a terminal, we followed the instructions here (https://docs.anaconda.com/anaconda/install/linux/) and performed the installation.

Python environment and OpenCV for Python

Following the previous step, we used the commands below to create a virtual environment for our code. We needed python version 3.7 (even though anaconda highlights version 3.9 here https://www.anaconda.com/products/individual#linux) and OpenCV for python.

source ~/anaconda3/bin/activate;
# We need python 3.7 at max to support TensorFlow version 1
conda create --yes --name Style python=3.7;
conda activate Style;
# Version 1 of TensorFlow is needed for the project that we will clone, version 1.15 is the latest and greatest version of TensorFlow 1.
pip install tensorflow==1.15 tensorflow-gpu==1.15 scipy numpy opencv-python;

Cloning the project and all necessary files

git clone https://github.com/cysmith/neural-style-tf.git;
cd neural-style-tf/;
wget http://www.vlfeat.org/matconvnet/models/imagenet-vgg-verydeep-19.mat;
#After everything is complete, it is time to create our first 'artistic' image.
python neural_style.py --content_img "/home/bob/Pictures/Aphrodite Hills Golf Course - Paphos, Cyprus.jpg" --style_imgs "/home/bob/Pictures/Van_Gogh_-_Starry_Night_-_Google_Art_Project.jpg" --max_size 400 --max_iterations 500 --device /cpu:0 --verbose;

Results

Result
Original Content
Adapted Style Input

Problems that you might get

If you get the following error:

ImportError: libGL.so.1: cannot open shared object file: No such file or directory

You will need to install some additional dependencies for OpenCV as your Ubuntu installation might have been minimal. To fix this issue, install the following package from the repositories:

sudo apt-get update;
sudo apt-get install -y python3-opencv;

2-on-2 A.I. football players trained with reinforcement learning M.L. playing against each other

 in Programming  tagged a.i. / ai / artificial intelligence / football / m.l. / machine learning / ml / reinforcement learning / rl / unity by

This lengthy video shows several hours of 4 artificial intelligence agents playing football. The players were trained with machine learning. This means that they were never instructed on how to play football or what their purpose was. After several tries, they found out that getting the ball into the opponents’ goal rewards them, while if the opponent achieves the opposite effect, they receive a penalty.

This video was produced using the Unity game engine.

Simple PHP script that lists all files in a directory, sorts them by modification date, and creates hyperlinks for each

 in PHP / Programming  tagged array_keys / filemtime / in_array / php / scandir by 
<?php

echo '<html>';

$ignore = array('.', '..', 'index.php');
$files = array();

foreach (scandir($dir) as $file) {
  if (in_array($file, $ignore)) {
    continue;
  }
  $files[$file] = filemtime($dir . '/' . $file);
}

arsort($files);

$keys = array_keys($files);

foreach ($files as $key => $value) {
  echo date('r', $value), ' <a href="', $dir, '/', $key, '">', $key, '</a><br/>';
}

echo 'Done';

echo '</html>';
?>

Gravity Forms: How to Restrict a DatePicker Date Range and Datepicker 1 becomes minDate for datepicker 2

 in JavaScript / WordPress  tagged date picker / gravity forms by

Create an html block in your form and add the following code:

<script type="text/javascript">
gform.addFilter( 'gform_datepicker_options_pre_init', function( optionsObj, formId, fieldId ) {
    if ( formId == 10 && (fieldId == 30 || fieldId == 32) ) {
        var ranges = [
            { start: new Date('10/01/2021'), end: new Date('10/11/2021') }
        ];
        optionsObj.beforeShowDay = function(date) {
            for ( var i=0; i<ranges.length; i++ ) {
                if ( date >= ranges[i].start && date <= ranges[i].end ) return [true, ''];
            }
            return [false, ''];
        };
        optionsObj.minDate = ranges[0].start;
        optionsObj.maxDate = ranges[ranges.length -1].end;
    }
    if ( formId == 10 && fieldId == 30 ) {
        optionsObj.onClose = function (dateText, inst) {
            jQuery('#input_10_32').datepicker('option', 'minDate', dateText).datepicker('setDate', dateText);
        };
    }
    return optionsObj;
});
</script>

Be sure to change the dates, the form ID and field ID for the two fields.