空影

空影

摄影、后期处理、图像合成的经验分享。

Photography Post-Processing Study Notes - Spot Healing Project

Prologue#

I have been playing photography for a while now, and recently I feel like I have reached a bottleneck in my skills.

Most of my previous photos were taken in special times and scenes, and most of them cannot be reproduced. They are like beautiful misunderstandings. My photography skills are completely uncontrollable, sometimes good and sometimes bad, with slow progress.

Today, I officially started learning post-processing in photography, referring to books such as "Digital Photography Post-Processing Complete Guide" by Chen Jianqiang. I will learn tools like PhotoShop, GIMP, AIGC (Singing Secret Technique, ControlNet) to master the magic of images!

Thanks to Xlog for providing IPFS storage, which eliminates my worries about image hosting and storage. So most of the images below are JPEG, Tiff, and other high-definition large-size images.

[Modified on April 3, 2023], the exported format of Xlog is an IPFS link, which is difficult to transfer. Starting from April 3, this site will use image hosting to store images.

Spot Removal#

Off-topic#

For ordinary people, this requirement may be to fix blemishes on the skin, flaws in pictures, or small-scale image cropping, and it is not frequently used. But for me, it is a hard requirement!

Due to my poor maintenance and lack of lens cleaning habits, after taking photos, I just put the camera in my pocket. My poor (first/last/only) compact camera, SONY DSC-WX350, has developed sensor dust spots that cannot be removed. It's as annoying as the countdown in Wang Miao's eyes in "The Three-Body Problem". If it encounters a dark scene, it's not too bad because the spots blend in with the scene and are not noticeable. But once it encounters a light-colored scene, the spots become glaringly obvious, making me grind my teeth in frustration.

Below are its "glaring" appearances (pay attention to the right side and bottom left corner of the images):

DSC00028

DSC00053

DSC00808

But it looks much better in dark scenes:

DSC01671

Enough of the digression. If it weren't for this issue, I wouldn't have written this article. To some extent, I have to thank these little incidents for giving me more opportunities to learn.

Today's Homework#

Today, I mainly learned these tools:

image

Spot Removal on a Clean Background#

Both the Spot Healing Brush Tool and the Healing Brush Tool can easily remove spots.

Before the repair:#

DSC00480

The basic steps are not worth recording, as it is a foolproof operation.

image

After the repair:#

Iron Frame_fixed

Complex Repair#

Here, I will use the little horse I encountered last week as an example (I randomly adjusted the colors with LightRoom, which made the horse look unrealistic).

  1. Patch Tool: For large-scale modifications (it's even easier with Content-Aware Patch enabled).

image

  1. Content-Aware Move Tool: For large areas of spots or texture repairs (e.g., fixing the white garbage bag on the right side of the horse's leg).

  2. Clone Stamp Tool: For repairing edges (e.g., the boundary between the horse's leg and tail).

Before the repair:#

Red Horse

After the repair:#

Red Horse_fixed

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