Examples of Varied forms

Scanning

In computing, an image scanner—often abbreviated to just scanner— is a device that optically scans images, printed text, handwriting, or an object, and converts it to a digital image. Common examples found in offices are variations of the desktop (or flatbed) scanner where the document is placed on a glass window for scanning. Hand-held scanners, where the device is moved by hand, have evolved from text scanning "wands" to 3D scanners used for industrial design, reverse engineering, test and measurement, orthotics, gaming and other applications. Mechanically driven scanners that move the document are typically used for large-format documents, where a flatbed design would be impractical.

Modern scanners typically use a charge-coupled device (CCD) or a Contact Image Sensor (CIS) as the image sensor, whereas older drum scanners use a photomultiplier tube as the image sensor. A rotary scanner, used for high-speed document scanning, is another type of drum scanner, using a CCD array instead of a photomultiplier. Other types of scanners are planetary scanners, which take photographs of books and documents, and 3D scanners, for producing three-dimensional models of objects.

Another category of scanner is digital camera scanners, which are based on the concept of reprographic cameras. Due to increasing resolution and new features such as anti-shake, digital cameras have become an attractive alternative to regular scanners. While still having disadvantages compared to traditional scanners (such as distortion, reflections, shadows, low contrast), digital cameras offer advantages such as speed, portability and gentle digitizing of thick documents without damaging the book spine. New scanning technologies are combining 3D scanners with digital cameras to create full-color, photo-realistic 3D models of objects.

In the biomedical research area, detection devices for DNA micro arrays are called scanners as well. These scanners are high-resolution systems (up to 1 µm/ pixel), similar to microscopes. The detection is done via CCD or a photomultiplier tube (PMT).

Here are a few scans, these have been done by me.

Textures

Texture in a painting is the feel of the canvas. It can be based on the paint, and its application, or addition materials such as ribbon, metal, wood, lace, leather and sand. Texture in painting stimulates two different senses, visual and tactile. There are four types of texture in art: actual texture, simulated texture, abstract texture, and invented texture. The concept of 'painterliness' also has bearing on 'texture' in painting.

In the visual arts, texture is the perceived surface quality of a work of art. It is an element of two-dimensional and three-dimensional design and is distinguished by its perceived visual and physical properties. Use of texture, along with other elements of design, can convey a variety of messages and emotions.

These are images that I have found on Google.

Collages

A collage (From the French: coller, to glue, French pronunciation: is a work of formal art, primarily in the visual arts, made from an assemblage of different forms, thus creating a new whole.

A collage may include newspaper clippings, ribbons, bits of colored or hand-made papers, portions of other artwork, photographs and other found objects, glued to a piece of paper or canvas. The origins of collage can be traced back hundreds of years, but this technique made a dramatic reappearance in the early 20th century as an art form of novelty.

The term collage derives from the French "colle" meaning "glue". This term was coined by both Georges Braque and Pablo Picasso in the beginning of the 20th century when collage became a distinctive part of modern art.

Here are some images that i have found on Google

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