Many Digital Cameras include timestamp directly on image
Metadata in binary image deprecates need for visible timestamp
Experienced Photoshop users can fix imagesBad for novicesNo batch processing
Time stamp on a picture?Is there a way to remove a time
stamp from a picture already taken? Some online (free) program? I took a picture that is basically ruined due to where the time stamp is at. :( I just want to know if there's a way of removing it (if you have the program to do so, help!)
3 months ago
Additional Details3 months ago
This is the picture.http://img.photobucket.com/albums/v440/P...
3 months ago
Ok, photo-shop people. 10 points goes to whoever removes that time stamp successfully! I do not have Photoshop. :(
Image referenced with timestamp
http://answers.yahoo.com/question/index?qid=20080818210803AAn9u71
No Paper on how to do it (Not been done before?)No easy database of timestamped imagesTimestamps differ in:
Color – (Red, Orange, Yellow, Blue, & White)Length – (From “2007 05 05” to “2004/01/01
00:14:10”)Num of Lines – Both 1 and 2 line timestamps Position & Orientation
JPEG Compression!!Timestamp is different color from “original”Timestamp color depends on picture contentTimestamp color varies throughout pictureBlur Edges
Common Timestamp FeaturesPosition: Near cornersColor Value: Timestamps are bright
unnatural colors High ValueColor Saturation: Timestamp are not
greyish (dull) Med-High saturation*Gradient Magnitude: Text is high
frequency strong edges
Position Saturation & Value
Gradient Magnitude
1) Find all pixels that meet all features
2) Median Filter3) Create color model
from pixels in corner4) Choose corners with
timestamp (most pixels)
5) Select all pixels which meet color model
6) Dilate selection for a safety buffer
Decimate the timestampThresholding is to simple a selection criteria
Select the wrong cornerMost timestamp pixels is to simple a model
Creating the wrong color modelAssuming only 1 color will pass the thresholds
is naïveDilation may be overly aggressive
Simply dilating n-pixels is too simpleDilatation may be underly aggressive
Simply dilating n-pixels is too simple
The Clown’s hair meets all my criteria – It’s oddly colored, vibrant, has large gradients, and near a corner
Fill in timestamp with Efros &Leung style texture synthesis
Fill order:Pixels with the most non-timestamp neighbors
are filled 1st
Only patches form the corner are used as a source for synthesis
Fill order: Black to Red
SlowOnly Take
samples from timestamp corner
Patch Size can be difficult to choose
Fails with structured textures