105 lines
2.3 KiB
Bash
105 lines
2.3 KiB
Bash
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#!/bin/bash
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###############################################################################
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# Script Name: find_panoramas.sh
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#
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# Description:
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# Recursively scans a directory for JPG and PNG images and identifies
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# potential panorama images using multiple detection methods:
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#
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# 1. Aspect ratio < 0.5
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# 2. Aspect ratio > 1.8
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# 3. Width > 3 × Height
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#
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# Images already tagged as "Panorama" are ignored.
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#
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# Matching images are:
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# - Logged to a timestamped logfile
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# - Optionally copied to a review directory
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#
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# Requirements:
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# - Bash
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# - ImageMagick (identify)
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# - bc
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#
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# Usage:
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# ./find_panoramas.sh
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#
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###############################################################################
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set -euo pipefail
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IMG_DIR="/home/lucas/Pictures"
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COPY_DIR="/home/lucas/Downloads"
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PANORAMA_AR_LT="0.5"
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PANORAMA_AR_HT="1.8"
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DATE=$(date +"%Y%m%d_%H%M%S")
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LOGFILE="${IMG_DIR}/panorama_${DATE}.log"
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touch "$LOGFILE"
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write_log() {
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echo "$@"
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echo "$@" >> "$LOGFILE"
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}
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# Verify dependencies
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for cmd in identify bc; do
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command -v "$cmd" >/dev/null 2>&1 || {
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echo "Error: '$cmd' not found"
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exit 1
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}
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done
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find "$IMG_DIR" \
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\( -iname "*.jpg" -o -iname "*.jpeg" -o -iname "*.png" \) \
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-print0 |
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while IFS= read -r -d '' img; do
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# Get dimensions
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dimensions=$(identify -format "%wx%h" "$img" 2>/dev/null) || {
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write_log "Skipping invalid image: $img"
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continue
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}
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width=${dimensions%x*}
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height=${dimensions#*x}
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# Avoid divide-by-zero
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[[ "$height" -eq 0 ]] && continue
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# Calculate aspect ratio
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aspect_ratio=$(echo "scale=4; $height / $width" | bc -l)
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# Skip images already marked Panorama
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if identify -verbose "$img" 2>/dev/null | grep -q "Panorama"; then
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continue
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fi
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panorama=false
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# Aspect-ratio checks
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if (( $(echo "$aspect_ratio < $PANORAMA_AR_LT" | bc -l) )); then
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panorama=true
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elif (( $(echo "$aspect_ratio > $PANORAMA_AR_HT" | bc -l) )); then
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panorama=true
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fi
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# Width > 3 × Height check
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if (( width > height * 3 )); then
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panorama=true
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fi
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if [[ "$panorama" == true ]]; then
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write_log "PANORAMA | ${dimensions} | AR=${aspect_ratio} | ${img}"
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# Copy for manual review
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cp -n "$img" "$COPY_DIR/" 2>/dev/null || true
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fi
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done
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write_log "Scan complete."
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