Function collectImageFiles

src/utils/imageFileUtils.ts:71–87

(files: Map<string, File>)

 * Stores each image under multiple keys (path suffixes, case variants) for fast O(1) lookup.
 */
export function collectImageFiles(files: Map<string, File>): Map<string, File> {
  const imageFiles = new Map<string, File>();

  for (const [path, file] of files) {
    if (!isImageFile(path)) {
      continue;
    }

    for (const key of getImageLookupKeys(path)) {
      if (!imageFiles.has(key)) {
        imageFiles.set(key, file);
      }
    }
  }

  return imageFiles;
}

/**
 * Look up an image file by COLMAP image name.