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#!/usr/bin/python3
"""
Provides a GUI for reviewing images. Looks in a for-review directory for
images named 'eolId1 contentId1.ext1', and, for each EOL ID, enables the user to
choose an image to keep, or reject all. Also provides image rotation.
Chosen images are placed in another directory, and rejected ones are deleted.
"""
import sys, re, os, time
import sqlite3
import tkinter as tki
from tkinter import ttk
import PIL
from PIL import ImageTk, Image, ImageOps
IMG_DIR = 'imgs_for_review'
OUT_DIR = 'imgs'
EXTRA_INFO_DB = os.path.join('..', 'data.db')
#
IMG_DISPLAY_SZ = 400
MAX_IMGS_PER_ID = 3
IMG_BG_COLOR = (88, 28, 135)
PLACEHOLDER_IMG = Image.new('RGB', (IMG_DISPLAY_SZ, IMG_DISPLAY_SZ), IMG_BG_COLOR)
class EolImgReviewer:
""" Provides the GUI for reviewing images """
def __init__(self, root, imgDir, imgList, extraInfoDb, outDir):
self.root = root
root.title('EOL Image Reviewer')
# Setup main frame
mainFrame = ttk.Frame(root, padding='5 5 5 5')
mainFrame.grid(column=0, row=0, sticky=(tki.N, tki.W, tki.E, tki.S))
root.columnconfigure(0, weight=1)
root.rowconfigure(0, weight=1)
# Set up images-to-be-reviewed frames
self.imgs = [PLACEHOLDER_IMG] * MAX_IMGS_PER_ID # Stored as fields for use in rotation
self.photoImgs = list(map(lambda img: ImageTk.PhotoImage(img), self.imgs)) # Image objects usable by tkinter
# These need a persistent reference for some reason (doesn't display otherwise)
self.labels: list[ttk.Label] = []
for i in range(MAX_IMGS_PER_ID):
frame = ttk.Frame(mainFrame, width=IMG_DISPLAY_SZ, height=IMG_DISPLAY_SZ)
frame.grid(column=i, row=0)
label = ttk.Label(frame, image=self.photoImgs[i])
label.grid(column=0, row=0)
self.labels.append(label)
# Add padding
for child in mainFrame.winfo_children():
child.grid_configure(padx=5, pady=5)
# Add keyboard bindings
root.bind('<q>', self.quit)
root.bind('<Key-j>', lambda evt: self.accept(0))
root.bind('<Key-k>', lambda evt: self.accept(1))
root.bind('<Key-l>', lambda evt: self.accept(2))
root.bind('<Key-i>', lambda evt: self.reject())
root.bind('<Key-a>', lambda evt: self.rotate(0))
root.bind('<Key-s>', lambda evt: self.rotate(1))
root.bind('<Key-d>', lambda evt: self.rotate(2))
root.bind('<Key-A>', lambda evt: self.rotate(0, True))
root.bind('<Key-S>', lambda evt: self.rotate(1, True))
root.bind('<Key-D>', lambda evt: self.rotate(2, True))
# Initialise fields
self.imgDir = imgDir
self.imgList = imgList
self.outDir = outDir
self.imgListIdx = 0
self.nextEolId = 0
self.nextImgNames: list[str] = []
self.rotations: list[int] = []
# For displaying extra info
self.extraInfoDbCon = sqlite3.connect(extraInfoDb)
self.extraInfoDbCur = self.extraInfoDbCon.cursor()
self.numReviewed = 0
self.startTime = time.time()
#
self.getNextImgs()
def getNextImgs(self):
""" Updates display with new images to review, or ends program """
# Gather names of next images to review
for i in range(MAX_IMGS_PER_ID):
if self.imgListIdx == len(self.imgList):
if i == 0:
self.quit()
return
break
imgName = self.imgList[self.imgListIdx]
eolId = int(re.match(r'(\d+) (\d+)', imgName).group(1))
if i == 0:
self.nextEolId = eolId
self.nextImgNames = [imgName]
self.rotations = [0]
else:
if self.nextEolId != eolId:
break
self.nextImgNames.append(imgName)
self.rotations.append(0)
self.imgListIdx += 1
# Update displayed images
idx = 0
while idx < MAX_IMGS_PER_ID:
if idx < len(self.nextImgNames):
try:
img = Image.open(os.path.join(self.imgDir, self.nextImgNames[idx]))
img = ImageOps.exif_transpose(img)
except PIL.UnidentifiedImageError:
os.remove(os.path.join(self.imgDir, self.nextImgNames[idx]))
del self.nextImgNames[idx]
del self.rotations[idx]
continue
self.imgs[idx] = self.resizeImgForDisplay(img)
else:
self.imgs[idx] = PLACEHOLDER_IMG
self.photoImgs[idx] = ImageTk.PhotoImage(self.imgs[idx])
self.labels[idx].config(image=self.photoImgs[idx])
idx += 1
# Restart if all image files non-recognisable
if not self.nextImgNames:
self.getNextImgs()
return
# Update title
firstImgIdx = self.imgListIdx - len(self.nextImgNames) + 1
lastImgIdx = self.imgListIdx
title = self.getExtraInfo(self.nextEolId)
title += f' (imgs {firstImgIdx} to {lastImgIdx} out of {len(self.imgList)})'
self.root.title(title)
def accept(self, imgIdx):
""" React to a user selecting an image """
if imgIdx >= len(self.nextImgNames):
print('Invalid selection')
return
for i in range(len(self.nextImgNames)):
inFile = os.path.join(self.imgDir, self.nextImgNames[i])
if i == imgIdx: # Move accepted image, rotating if needed
outFile = os.path.join(self.outDir, self.nextImgNames[i])
img = Image.open(inFile)
img = ImageOps.exif_transpose(img)
if self.rotations[i] != 0:
img = img.rotate(self.rotations[i], expand=True)
img.save(outFile)
os.remove(inFile)
else: # Delete non-accepted image
os.remove(inFile)
self.numReviewed += 1
self.getNextImgs()
def reject(self):
""" React to a user rejecting all images of a set """
for i in range(len(self.nextImgNames)):
os.remove(os.path.join(self.imgDir, self.nextImgNames[i]))
self.numReviewed += 1
self.getNextImgs()
def rotate(self, imgIdx, anticlockwise = False):
""" Respond to a user rotating an image """
deg = -90 if not anticlockwise else 90
self.imgs[imgIdx] = self.imgs[imgIdx].rotate(deg)
self.photoImgs[imgIdx] = ImageTk.PhotoImage(self.imgs[imgIdx])
self.labels[imgIdx].config(image=self.photoImgs[imgIdx])
self.rotations[imgIdx] = (self.rotations[imgIdx] + deg) % 360
def quit(self, e = None):
print(f'Number reviewed: {self.numReviewed}')
timeElapsed = time.time() - self.startTime
print(f'Time elapsed: {timeElapsed:.2f} seconds')
if self.numReviewed > 0:
print(f'Avg time per review: {timeElapsed/self.numReviewed:.2f} seconds')
self.extraInfoDbCon.close()
self.root.destroy()
#
def resizeImgForDisplay(self, img):
""" Returns a copy of an image, shrunk to fit in it's frame (keeps aspect ratio), and with a background """
if max(img.width, img.height) > IMG_DISPLAY_SZ:
if (img.width > img.height):
newHeight = int(img.height * IMG_DISPLAY_SZ/img.width)
img = img.resize((IMG_DISPLAY_SZ, newHeight))
else:
newWidth = int(img.width * IMG_DISPLAY_SZ / img.height)
img = img.resize((newWidth, IMG_DISPLAY_SZ))
bgImg = PLACEHOLDER_IMG.copy()
bgImg.paste(img, box=(
int((IMG_DISPLAY_SZ - img.width) / 2),
int((IMG_DISPLAY_SZ - img.height) / 2)))
return bgImg
def getExtraInfo(self, eolId: int) -> str:
""" Used to display extra EOL ID info """
query = 'SELECT names.alt_name FROM' \
' names INNER JOIN eol_ids ON eol_ids.name = names.name' \
' WHERE id = ? and pref_alt = 1'
row = self.extraInfoDbCur.execute(query, (eolId,)).fetchone()
if row is not None:
return f'Reviewing EOL ID {eolId}, aka "{row[0]}"'
else:
return f'Reviewing EOL ID {eolId}'
def reviewImgs(imgDir: str, outDir: str, extraInfoDb: str):
print('Checking output directory')
if not os.path.exists(outDir):
os.mkdir(outDir)
print('Getting input image list')
imgList = os.listdir(imgDir)
imgList.sort(key=lambda s: int(s.split(' ')[0]))
if not imgList:
print('No input images found')
sys.exit(0)
# Create GUI and defer control
print('Starting GUI')
root = tki.Tk()
EolImgReviewer(root, imgDir, imgList, extraInfoDb, outDir)
root.mainloop()
if __name__ == '__main__':
import argparse
parser = argparse.ArgumentParser(description=__doc__, formatter_class=argparse.RawDescriptionHelpFormatter)
parser.parse_args()
#
reviewImgs(IMG_DIR, OUT_DIR, EXTRA_INFO_DB)
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