update beach_512,

check_valid_image.py

@@ -0,0 +1,51 @@
+# iterate files over subdirectories in `00_store`, store image files in hash table, delete files with same hash
+import os
+import hashlib
+import imghdr
+
+deleted = 0
+
+
+def is_image(filename, verbose=False):
+
+    data = open(filename, "rb").read(10)
+
+    # check if file is JPG or JPEG
+    if data[:3] == b"\xff\xd8\xff":
+        if verbose == True:
+            print(filename + " is: JPG/JPEG.")
+        return True
+
+    # check if file is PNG
+    if data[:8] == b"\x89\x50\x4e\x47\x0d\x0a\x1a\x0a":
+        if verbose == True:
+            print(filename + " is: PNG.")
+        return True
+
+    # check if file is GIF
+    if data[:6] in [b"\x47\x49\x46\x38\x37\x61", b"\x47\x49\x46\x38\x39\x61"]:
+        if verbose == True:
+            print(filename + " is: GIF.")
+        return True
+
+    return False
+
+
+def action(in_path):
+    for root, _, files in os.walk(in_path):
+        for file in files:
+            file_path = os.path.join(root, file)
+            print(file_path)
+
+            with open(file_path, "rb") as f:
+                if is_image(file_path):
+                    # it's a jpeg
+                    pass
+                else:
+                    # print(file_path, "is not valid jpeg")
+                    os.remove(file_path)
+
+
+CURR_DIR = os.path.dirname(os.path.abspath(__file__))
+action(CURR_DIR + "/data/train")
+action(CURR_DIR + "/data/validate")