Automatic generation of accentuated pencil drawing with saliency map and LIC

Abstract

An artist usually does not draw all the areas in a picture homogeneously but tries to make the work more expressive by emphasizing what is important while eliminating irrelevant details. Creating expressive painterly images with such accentuation effect remains to be a challenge because of the subjectivity of information selection. This paper presents a novel technique for automatically converting an input image into a pencil drawing with such emphasis and elimination effect. The proposed technique utilizes saliency map, a computational model for visual attention, to predict the focus of attention in the input image. A new level of detail controlling algorithm using multi-resolution pyramid is also developed for locally adapting the rendering parameters, such as the density, orientation and width of pencil strokes, to the degree of attention defined by saliency map. Experimental results show that the images generated with the proposed method present the visual effect similar to that of the real pencil drawing and can successfully direct the viewer's attention toward the focus.

A Holistic Approach for Efficient Contour Detection

“…In pencil drawing field, Hata et al [37] proposed a technique that utilizes saliency map to predict the focus of attention in the input image, and it can automatically convert an input image into the pencil drawing. In addition, one of the advantages of contour detection is that it likes the optimal feature extraction for image abstraction [38] .…”

Pencil drawing animation from a video

“…Large number of pencil drawing generation techniques are based on image processing or filtering . Mao et al .…”

“…Recently, Hata et al . developed a method for accentuated pencil drawing with saliency map and LIC. Their approach automatically predicts the focus of attention in a viewer‐centered picture and controls the level of details, as well as the appearance of pencil strokes according to the degree of attention given by the saliency map.…”

Automatic pencil drawing generation using saliency map

“…We present a technique for automatically converting an input image into a pencil drawing with such effect of emphasis and elimination [HATA, et al 2012]. The technique combines Saliency Map [ITTI, et al 1998] and Line Integral Convolution(LIC) based pencil drawing filter [MAO, et al 2001].…”