Photography

subtitle

Overview

Cityscapes

Stroke Thickness

This slider adjusts the tickness of the pencil strokes to imitate shart of stumpy pencils.

Stroke thickness 1: thin pencil strokes.

Stroke thickness 1

Stroke thickness 4: broad pencil strokes.

Stroke thickness 4

Colorize Strokes

With this switch a colorful or black and white variant can be achieved.

Colorized strokes: pencil hatching keeps the source colors.

colorful

Black-and-white strokes: pencil hatching removes the source colors.

black and white

Stroke Granularity

This slider adjusts the length of the strokes to create fine or coarse drawings.

Stroke granularity 0.1: short fine strokes.

Stroke granularity 0,1

Stroke granularity 1.0: longer coarse strokes.

Stroke granularity 1,0

Contours

The amount of automatically detected contours can be manipulated using this slider.

Contours 1: fewer automatically detected dark contours.

Contours 1

Contours 2.5: stronger automatically detected dark contours.

Contours 2,5

Stroke Accuracy

This slider defines whether the strokes are drawn accurately or sketchy.

Stroke accuracy 0.1: loose sketchy stroke directions.

Stroke accuracy 0,1

Stroke accuracy 0.5: more precise stroke directions.

Stroke accuracy 0,5

Brightness

Using this slider, brightness of the image can be changed by adjusting the stroke density.

Brightness -2.0: darker dense pencil hatching.

Brightness -2,0

Default brightness: medium stroke density.

default brightness

Brightness +2.0: lighter sparse pencil hatching.

Brightness +2,0

Contrast

The contrast that results from the stroke density.

Contrast -1.0: soft low-contrast pencil hatching.

Contrast -1,0

Default contrast: balanced pencil hatching contrast.

default Contrast

Contrast +1.0: stronger high-contrast pencil hatching.

Contrast +1,0

Creative

Video description: The demo shows the Pencil Hatching Android app turning photographs into black-and-white pencil drawings. A user opens a photo, previews a sketched version, changes drawing presets and parameters, and compares the original image with progressively denser hatched results. The important visual information is the before-and-after transformation: smooth photo regions become layered pencil strokes, edges become darker outlines, and parameter changes make the drawing lighter, darker, rougher, or more detailed.

Black & White

Default

Default preset: colorful pencil strokes mixed with dark contours.

This preset is optimized for most use cases. Colorful strokes are mixed with dark contours.

Stumpy Pencil

Stumpy Pencil preset: thick bright-grey strokes and large dark contours.

Thick strokes with large countours imitate the style of a stumpy pencil. A bright grey tone accentuate the image.

Sharp Pencil

Sharp Pencil preset: black-and-white drawing with fine sharp outlines.

Accurate, sharp strokes constitute the style of a sharp pencil. The result is a black and white drawing with fine outlines.

Strong Black and White

Strong Black and White preset: high-contrast monochrome sketch with coarse strokes.

This preset is characterized by a contrasty back and white style with coarse stroke.

Lighten Black and White

Lighten Black and White preset: bright monochrome sketch with sparse contours.

A bright black and white style with spare contours results in a sketchy drawing

Fineliner

Fineliner preset: colorful fine strokes with black ink-like outlines.

This preset imitates the look of a file liner that draws colorful strokes with black outlines.

Fine

Fine preset: bright curved strokes with fine details and sharp black contours.

Bright, curved strokes revealing fine details are complemented by black, sharp contours.