Image Retouching and Restoration Flashcards

A photo restoration project requires removing numerous small dust specks and minor scratches from a scanned vintage photograph. Which of the following tools provides a dialog box with 'Radius' and 'Threshold' sliders, specifically designed to target and eliminate these types of imperfections efficiently?

Answer: Dust & Scratches Filter

The Dust & Scratches filter is the correct tool as it is specifically designed to remove noise, dust, and scratches. It works by analyzing the image for anomalies and provides 'Radius' and 'Threshold' sliders to control the intensity of the effect, allowing for a balance between removing imperfections and preserving image detail.

You are retouching a portrait and want to even out skin tones and colors without affecting the fine skin texture (pores, fine lines). Which advanced technique, involving the separation of image data onto high and low-frequency layers, is best suited for this task?

Answer: Frequency Separation

Frequency Separation is a technique that separates the high-frequency data (texture and detail) from the low-frequency data (color and tone) onto separate layers. This allows the retoucher to edit color and tone on the low-frequency layer (e.g., with a Gaussian Blur or Mixer Brush) without blurring or destroying the essential skin texture on the high-frequency layer.

When using the Healing Brush Tool for non-destructive retouching on a separate empty layer, which setting must be enabled in the options bar to ensure the tool samples from the visible image layers below?

Answer: Sample: All Layers

To work non-destructively on a new empty layer with the Healing Brush, you must change the 'Sample' setting in the options bar. 'All Layers' (or 'Current & Below') tells Photoshop to look at the pixels on the layers beneath the active empty layer for its source data, allowing you to paint the corrections separately from the original image.

A retoucher needs to remove a large, irregularly shaped object from a complex background, like a person standing in a detailed forest scene. The Content-Aware Fill command is producing unnatural results. Which tool allows the user to manually select the distracting area and then drag that selection to a different source area to sample from, offering more direct control over the replacement texture?

Answer: Patch Tool

The Patch Tool, especially in its Content-Aware mode, is ideal for this scenario. It allows the user to make a selection around the unwanted object and then drag that selection to a clean source area. Photoshop then blends the source texture into the target area, providing more user control over the final result compared to the more automated Content-Aware Fill.

What is the primary functional difference between the Clone Stamp Tool and the Healing Brush Tool when retouching an image?

Answer: The Clone Stamp Tool paints an exact copy of the source pixels, whereas the Healing Brush blends the texture, lighting, and shading of the source with the destination area.

The key distinction is in how they apply the sampled pixels. The Clone Stamp Tool makes a direct, one-to-one copy of the source pixels. The Healing Brush Tool, however, takes the texture from the source but intelligently blends the color, lighting, transparency, and shading with the pixels in the area being repaired, resulting in a more seamless blend.

You are restoring a photograph with a large tear that runs through a person's face. While using the Patch Tool in Content-Aware mode, you find the initial result is close but not perfect. Which of the following options in the Patch Tool's options bar allows you to control how closely the patch should reflect existing image patterns?

Answer: Structure

When using the Patch Tool in Content-Aware mode, the 'Structure' setting (with a value from 1 to 7) controls how strongly the patch adheres to existing image patterns from the source area. A higher value will more closely replicate the source patterns.