File size: 9,758 Bytes
d5bfab8 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 |
use super::{Image, ImageTryCreate};
use super::read_testdata;
use std::fmt;
use std::fs;
use std::path::{Path, PathBuf};
use serde::{Deserialize, Serialize};
#[allow(dead_code)]
pub type Grid = Vec<Vec<u8>>;
#[allow(dead_code)]
pub trait GridToImage {
fn to_image(&self) -> anyhow::Result<Image>;
}
impl GridToImage for Grid {
fn to_image(&self) -> anyhow::Result<Image> {
// Extract height
let height_usize: usize = self.len();
if height_usize == 0 {
return Ok(Image::empty());
}
if height_usize > (u8::MAX as usize) {
return Err(anyhow::anyhow!("Too many rows in input data. Max 255 is possible"));
}
let height: u8 = height_usize as u8;
// Extract width
let width_usize: usize = self[0].len(); // At this point we know there is 1 or more rows
if width_usize > (u8::MAX as usize) {
return Err(anyhow::anyhow!("Too many columns in input data. Max 255 is possible"));
}
let width: u8 = width_usize as u8;
// Extract pixels
let mut pixels = Vec::<u8>::new();
for row in self {
if row.len() != width_usize {
return Err(anyhow::anyhow!("Expected all rows to have same length"));
}
for pixel in row {
pixels.push(*pixel);
}
}
let instance = Image::try_create(width, height, pixels)?;
Ok(instance)
}
}
#[allow(dead_code)]
pub trait GridFromImage {
fn from_image(image: &Image) -> Grid;
}
impl GridFromImage for Grid {
fn from_image(image: &Image) -> Grid {
let mut grid = Grid::new();
for y in 0..image.height() {
let mut row = Vec::<u8>::new();
for x in 0..image.width() {
let pixel_value: u8 = image.get(x as i32, y as i32).unwrap_or(255);
row.push(pixel_value);
}
grid.push(row);
}
grid
}
}
#[allow(dead_code)]
#[derive(Clone, Deserialize, Debug, Serialize)]
pub struct TaskPair {
input: Grid,
output: Grid,
}
impl TaskPair {
pub fn new(input: Grid, output: Grid) -> TaskPair {
TaskPair { input, output }
}
pub fn input(&self) -> &Grid {
&self.input
}
pub fn output(&self) -> &Grid {
&self.output
}
}
#[derive(Clone, Debug)]
pub struct ImagePair {
pub input: Image,
pub output: Image,
}
#[derive(Clone, Debug, PartialEq)]
enum ModelImagePairMode {
All,
Train,
Test,
}
#[derive(Clone)]
pub enum TaskId {
Custom { identifier: String },
Path { path: PathBuf },
}
impl TaskId {
pub fn identifier(&self) -> String {
match self {
TaskId::Custom { identifier } => {
return identifier.to_string();
}
TaskId::Path { path } => {
match path.file_stem() {
Some(value) => {
return value.to_string_lossy().to_string();
},
None => {
return "Path without a file_stem".to_string();
}
}
}
}
}
}
impl fmt::Debug for TaskId {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{:?}", self.identifier())
}
}
impl fmt::Display for TaskId {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}", self.identifier())
}
}
#[derive(Clone, Deserialize, Debug, Serialize)]
struct JsonTask {
train: Vec<TaskPair>,
test: Vec<TaskPair>,
}
#[allow(dead_code)]
#[derive(Clone, Debug)]
pub struct Task {
id: TaskId,
train: Vec<TaskPair>,
test: Vec<TaskPair>,
}
impl Task {
#[allow(dead_code)]
pub fn new(id: TaskId, train: Vec<TaskPair>, test: Vec<TaskPair>) -> Task {
Task { id, train, test }
}
#[allow(dead_code)]
pub fn id(&self) -> &TaskId {
&self.id
}
#[allow(dead_code)]
pub fn train(&self) -> &Vec<TaskPair> {
&self.train
}
#[allow(dead_code)]
pub fn test(&self) -> &Vec<TaskPair> {
&self.test
}
#[allow(dead_code)]
pub fn images_all(&self) -> anyhow::Result<Vec<ImagePair>> {
self.images_with_mode(ModelImagePairMode::All)
}
#[allow(dead_code)]
pub fn images_train(&self) -> anyhow::Result<Vec<ImagePair>> {
self.images_with_mode(ModelImagePairMode::Train)
}
#[allow(dead_code)]
pub fn images_test(&self) -> anyhow::Result<Vec<ImagePair>> {
self.images_with_mode(ModelImagePairMode::Test)
}
fn images_with_mode(&self, mode: ModelImagePairMode) -> anyhow::Result<Vec<ImagePair>> {
let mut task_pairs: Vec<&TaskPair> = vec!();
if mode == ModelImagePairMode::All || mode == ModelImagePairMode::Train {
let mut v: Vec<&TaskPair> = self.train.iter().map(|r|r).collect();
task_pairs.append(&mut v);
}
if mode == ModelImagePairMode::All || mode == ModelImagePairMode::Test {
let mut v: Vec<&TaskPair> = self.test.iter().map(|r|r).collect();
task_pairs.append(&mut v);
}
let mut image_pairs: Vec<ImagePair> = vec!();
for task in task_pairs {
let input: Image = task.input().to_image()?;
let output: Image = task.output().to_image()?;
image_pairs.push(ImagePair { input, output });
}
Ok(image_pairs)
}
pub fn from_json(task_id: TaskId, json: &str) -> anyhow::Result<Task> {
let json_task: JsonTask = serde_json::from_str(&json)?;
let task = Task {
id: task_id,
train: json_task.train,
test: json_task.test,
};
Ok(task)
}
#[allow(dead_code)]
pub fn load_testdata(name: &str) -> anyhow::Result<Task> {
let custom_identifier = format!("{}", name);
let json: String = read_testdata(name)?;
let task_id = TaskId::Custom { identifier: custom_identifier };
Self::from_json(task_id, &json)
}
pub fn load_with_json_file(json_file: &Path) -> anyhow::Result<Task> {
let json: String = match fs::read_to_string(json_file) {
Ok(value) => value,
Err(error) => {
return Err(anyhow::anyhow!("cannot load file, error: {:?} path: {:?}", error, json_file));
}
};
let task_id = TaskId::Path { path: PathBuf::from(json_file) };
Self::from_json(task_id, &json)
}
}
#[cfg(test)]
mod tests {
use super::*;
use std::path::PathBuf;
#[test]
fn test_10000_json_to_grid() {
let json_string = "[[1,2,3],[4,5,6]]";
let grid: Grid = serde_json::from_str(&json_string).expect("grid");
assert_eq!(grid.len(), 2);
assert_eq!(grid[0], vec![1,2,3]);
assert_eq!(grid[1], vec![4,5,6]);
}
#[test]
fn test_20000_grid_to_image() {
// Arrange
let json_string = "[[1,2,3],[4,5,6]]";
let grid: Grid = serde_json::from_str(&json_string).expect("grid");
// Act
let bm: Image = grid.to_image().expect("image");
// Assert
assert_eq!(bm.width(), 3);
assert_eq!(bm.height(), 2);
assert_eq!(bm.get(0, 0), Some(1));
assert_eq!(bm.get(1, 0), Some(2));
assert_eq!(bm.get(2, 0), Some(3));
assert_eq!(bm.get(0, 1), Some(4));
assert_eq!(bm.get(1, 1), Some(5));
assert_eq!(bm.get(2, 1), Some(6));
}
#[test]
fn test_30000_grid_from_image() {
// Arrange
let pixels: Vec<u8> = vec![
1, 2, 3,
4, 5, 6,
];
let input: Image = Image::try_create(3, 2, pixels).expect("image");
// Act
let grid: Grid = Grid::from_image(&input);
// Assert
assert_eq!(grid.len(), 2);
assert_eq!(grid[0], vec![1,2,3]);
assert_eq!(grid[1], vec![4,5,6]);
}
#[test]
fn test_40000_task_load_testdata() {
let task: Task = Task::load_testdata("6150a2bd").expect("task");
assert_eq!(task.train.len(), 2);
assert_eq!(task.test.len(), 1);
assert_eq!(task.id.identifier(), "6150a2bd");
}
#[test]
fn test_40001_task_load_with_json_file() {
// Arrange
let json: String = read_testdata("4258a5f9").expect("task");
let tempdir = tempfile::tempdir().expect("ok");
let basedir = PathBuf::from(&tempdir.path()).join("test_40000_model_load");
fs::create_dir(&basedir).expect("ok");
let path: PathBuf = basedir.join("hello.json");
fs::write(&path, &json).expect("ok");
// Act
let task: Task = Task::load_with_json_file(&path).expect("task");
// Assert
assert_eq!(task.train.len(), 2);
assert_eq!(task.test.len(), 1);
assert_eq!(task.id.identifier(), "hello");
}
#[test]
fn test_50000_convert_task_to_json_string() {
let task: Task = Task::load_testdata("6150a2bd").expect("ok");
assert_eq!(task.train.len(), 2);
assert_eq!(task.test.len(), 1);
assert_eq!(task.id.identifier(), "6150a2bd");
let json_task = JsonTask {
train: task.train,
test: task.test,
};
// Act
let json: String = serde_json::to_string(&json_task).expect("string");
// Assert
let task_id = TaskId::Custom { identifier: "mock".to_string() };
let task2: Task = Task::from_json(task_id, &json).expect("task");
assert_eq!(task2.train.len(), 2);
assert_eq!(task2.test.len(), 1);
assert_eq!(task2.id.identifier(), "mock");
}
}
|