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Oleksandr Melnyk FreeFly19

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FreeFly19 / data_loading_cell.py
Last active November 21, 2022 20:22
Tensorflow 2.0 Dataloading with aug and caching
import tensorflow as tf
train_ds = tf.keras.utils.image_dataset_from_directory(
train_dir,
validation_split=0.1,
subset="training",
label_mode="categorical",
#shuffle=True,
seed=123,
image_size=(image_size, image_size),
@FreeFly19
FreeFly19 / f1_definition.py
Created November 18, 2022 15:34
F1 metric for keras
import keras.backend as K
def f1(y_true, y_pred):
true_positives = K.sum(K.round(K.clip(y_true * y_pred, 0, 1)))
possible_positives = K.sum(K.round(K.clip(y_true, 0, 1)))
predicted_positives = K.sum(K.round(K.clip(y_pred, 0, 1)))
precision = true_positives / (predicted_positives + K.epsilon())
recall = true_positives / (possible_positives + K.epsilon())
f1_val = 2*(precision*recall)/(precision+recall+K.epsilon())
return f1_val
@FreeFly19
FreeFly19 / ArrayListExample.java
Created July 24, 2022 19:30
ArrayList, LinkedList
public class ArrayListExample {
public static void main(String[] args) {
MyArrayList<Long> listOfInts = new MyArrayList<>();
listOfInts.push(20L);
listOfInts.push(23L);
listOfInts.push(22L);
listOfInts.push(24L);
listOfInts.remove(23L);
@FreeFly19
FreeFly19 / client.py
Created February 15, 2022 17:51
Python TCP server and client
import socket
import sys
import threading
socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
socket.connect(('127.0.0.1', 9999))
def read_from_socket(socket):
while True:
message = socket.recv(2048)
@FreeFly19
FreeFly19 / es.ts
Last active January 14, 2022 15:39
interface Template {
id: string;
name: string;
}
interface Document {
}
interface State {
templates: Template[];
@FreeFly19
FreeFly19 / IRReceiverSender.ino
Created December 28, 2021 01:52
#define IR_SEND_PIN 27
#include <IRremote.h>
int RECV_PIN = 14;
IRrecv irrecv(RECV_PIN);
IRsend irsend;
int lastAddress = 1;
int lastCommand = 1;
@FreeFly19
FreeFly19 / IRReader.c
Created August 9, 2021 21:19
EuroLamp IR codes reader
#include <IRremote.h>
int RECV_PIN = 2;
IRrecv irrecv(RECV_PIN);
void setup() {
Serial.begin(9600);
irrecv.enableIRIn();
}
@FreeFly19
FreeFly19 / CoreApplication.java
Created July 16, 2021 08:26
DJI Image metadata parser
package ai.spector;
import com.adobe.xmp.XMPIterator;
import com.adobe.xmp.XMPMeta;
import com.adobe.xmp.properties.XMPPropertyInfo;
import com.drew.imaging.ImageMetadataReader;
import com.drew.metadata.Directory;
import com.drew.metadata.Metadata;
import com.drew.metadata.Tag;
import com.drew.metadata.xmp.XmpDirectory;
@FreeFly19
FreeFly19 / FullTextExample.java
Created July 5, 2021 13:34
import lombok.Data;
import java.util.*;
public class MainIndex {
public static void main(String[] args) {
Map<String, Set<Post>> postFullText = new HashMap<>();
Post p1 = new Post();
p1.id = 1L;
@FreeFly19
FreeFly19 / main.cpp
Created June 29, 2021 17:13
#include <WiFi.h>
#include <WiFiAP.h>
#include <DNSServer.h>
#include <ESPAsyncWebServer.h>
#include <ArduinoJson.h>
#include <AsyncJson.h>
#define index_html "<!doctype html><html lang=\"en\"><head><meta charset=\"UTF-8\"><meta name=\"viewport\" content=\"width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0\"><meta http-equiv=\"X-UA-Compatible\" content=\"ie=edge\"><title>Document</title></head><body><div style=\"display: flex; justify-content: space-between; padding-top: 100px;\"><div style=\"display: flex; width: 200px;transform: rotate(-90deg);\"><input type=\"range\" min=\"-1\" max=\"1\" step=\"0.1\" value=\"0\" id=\"throttle\"></div><div style=\"display: flex; width: 200px;\"><input type=\"range\" min=\"-1\" max=\"1\" step=\"1\" value=\"0\" id=\"steering-wheel\"></div></div><script>const throttleEl = document.getElementById('throttle');const steeringWheelEl = document.getElementById('steering-wheel');function sendState() {console.log(throttleEl.value, steeringW