HDTV / Monitor Test Patterns

Introduction

Philosophy of Pattern Design

analog TV

Viewing Resolution

Pattern resolution is intended to match native resolution of the display. At any other resolutions where the pattern size is scaled to the display size scaling artifacts will render many patterns useless. If your viewing program supports a scaling factor of 1:1, that is, one pixel in the image maps to one pixel in the display, then patterns not matching the display resolution will show without artifacts but intent of some of the patterns will not be attained.

8K Resolution Omitted Patterns

Pattern Files

Here are links to zip files containing test patterns for HDTV and common monitor resolutions. Each zip file contains 206 unique patterns arranged in groups by file name. These files are named with the actual resolution and a descriptive resolution identifier taken from a Wikipedia article.

Thumb-160x100 NTSC-720x480 PAL-720x576 XGA-1024x768
HD-1280x720 SXGA-1280x1024 WXGA-1280x800 WXGA+-1440x900
HD+-1600x900 UXGA-1600x1200 WSXGA+-1680x1050 WUXGA-1920x1200
FHD-1920x1080 WQXGA-2560x1600 QHD-2560x1440 UHD-3840x2160
8k-UHD-7680x4320 *

* Caution - Huge file: 257,371,010 bytes.

Pattern Groups

The tables below describe the groups that make up the files in the above zip files. The images are examples of typically a subset of the contents of a group. They are not links to the full size images, which are only available in the zip files. This is because of the amount of room the uncompressed files in all the resolutions would consume.

The thumbnails (160x100) in the examples show artifacts arising from the small size. These do not appear in the full-size images.

Quick Check Patterns

These patterns are intended for a quick, overall assessment or check of a display. The use of the term checkers is unrelated to the term check. Checkers refers to an alternating black/white pattern similar to a checkers board and is frequently used with gamma patterns. Check refers to assessment or evaluation.

Group NameDescriptionExamples
Check Clipping Target Limited - Use these to set white and black level (contrast and brightness) on the display. NOTE: these should be used for video signals that have a limited range of 16 - 235. The black circle contains 3 circles. The outer circle is digital video level 16, the second circle is digital video level 28, and the inner circle is digital video level 51. There should be a distinct difference between al three circles with no hint of color. The white circle contains 3 circles. The outer circle is digital video level 235, the second circle is digital video level 222, and the inner circle is digital video level 209. There should be a distinct difference between al three circles with no hint of color.
Check Color WipeDescription
Check CompositeDescription
Check ContrastDescription
Check ConvergenceDescription
Check GammaDescription
Check LengthDescription
Check OverscanDescription
Check PatternsDescription
Check ResolutionDescription

Comprehensive Patterns

The images in this group cover a broad range of patterns.

Group NameDescriptionExamples
ClippingDescription
Color BarsDescription
Color Composite Step WipeDescription
Color OneDescription
Color PatchDescription
Color RandomDescription
Color Random GrayDescription
Color Step Lin / LogDescription
Color TriangleDescription
Color Wipe Full / HalfDescription
Gamma Checker / LinesDescription
Geometry BarsDescription
Geometry CheckersDescription
Geometry Checkers LogDescription
Geometry DistortionDescription
Geometry GridDescription
Geometry Lines HoriDescription
Geometry Lines VertDescription
Geometry PointsDescription
Geometry SquaresDescription
Color Swatch HslDescription
Color Swatch HsvDescription
Color Swatch RgbDescription
Color Wipe HslDescription
Color Wipe HsvDescription
Color Wipe RgbDescription

History

Many years ago I posted some HDTV test patterns to Flickr. They were quite popular, received quite a few hits, and were probably linked from another site but I never found where.

In December, 2013, I wrote a new generating program in Python, included several composite images, many geometric and color images and used descriptive file names. These were, and continue to be, some of my most popular images on Flickr but at Flickr they were only in a resolution of 1920x1080.

In March, 2023, I converted the generating program from Python2 to Python3 correct a bug causing vertical lines in one of the color images, changed the name of the image files, updated the resolutions, and added many new patterns including the inverse of several.

29 Dec 2023 - Replaced WUXGA-1900x1200 with WUXGA-1920x1200. Original was in error. Thanks, Shawn, for pointing this out.