90 results about "Brush stroke" patented technology

The invention provides methods of protecting selected regions of an image from subsequent modification during the operation of a graphics application. The methods allow a user to select a region of an image to protect, and to assign a level of protection to the selected region. Subsequent brush strokes in the region are then attenuated according to the assigned level of protection and blended into the image without artifacts caused by overlapping strokes. The invention also provides a method of blending individual strokes into a texture without segmentation artifacts.

A method, system, and computer-readable storage medium are disclosed for simulating bristle brush behavior and generating vector output from such simulations. User input may represent a stroke made by a paint brush comprising multiple bristles sweeping across a canvas. A vector representation of the brush stroke's effects may be generated by, for each of the plurality of bristles: determining a path along which the bristle has swept, and generating a vector representation of the path along which the bristle has swept (e.g., a set of Bézier curves, or straight line segments). The vector representation of the effects of the brush stroke may comprise the vector representations of the paths along which each of the plurality of bristles has swept. The vector representations of the paths of each bristle sweep may be composited over each other in an image editing application to depict the brush stroke for display and / or for printing.

A system and method is described for rendering a warped brush stroke using a bitmap brush image, the brush stroke being along a arbitrarily curved guideline. The described system and method generate a piecewise linear approximation to the guideline followed by generating polygons with the aid of the linear segments such that the generated polygons are convex and contiguous linear segments result in contiguous polygons. A mapping is identified between segments of the bitmap brush and the polygons such that the corners or the boundaries of the segments of a segment map to the corners or boundaries of a corresponding polygon. The segment of the bitmap brush is mapped into the corresponding polygon using transformations that do not require visiting a pixel in the rendered warped brush stroke more than once. Examples of such transformations include bilinear transformations and texture mapping in combination with tiling.

An electric toothbrush in which the brushing head moves in an elliptical motion such that, on the brushing stroke, the bristles are proximate the teeth, and in the recovery portion of the cycle the bristles are pulled away from the teeth. A position sensitive switch automatically switches from a forward to a reverse operation of the electric motor, depending on the positioning of the toothbrush in a user's hand, allowing the user to brush both the upper and lower teeth using a stroke carrying the bristles from the gum line to the ends of the teeth, as is recommended by dental professionals, without having to move the toothbrush from hand to hand or manually move the switch from the forward to the reverse positions. A bridge pad engages the face of the teeth, maintaining a proper distance between the teeth and bristles during the elliptical rotation of the brush head.

Rendering 3D paintings can be done by compositing brush strokes embedded in space. Image elements are rendered into an image representable by a pixel array wherein at least some of the image elements correspond to simulated painting strokes. A method may include determining stroke positions in a 3D space, determining stroke orders, and for each pixel to be addressed, determining a pixel color value by determining strokes intersections with a view ray for that pixel, determining a depth order and a stroke order for intersecting fragments, each fragment having a color, alpha value, depth, and stroke order, assigning an intermediate color to each of the fragments, corresponding to a compositing of nearby fragments in stroke order, and assigning a color to the pixel that corresponds to a compositing of the fragments using the intermediate colors assigned to the fragments. The compositing may be done in depth order.

A system and method for automatically applying a gel coat brush stroke pattern over an image surface secured to a support is described. A liquid gel applicator dispenses a predetermined quantity of transparent liquid gel on the image surface. A brush stroking machine is provided with a plurality of brush head modules which are connected to a reciprocating linkage. The linkage causes reciprocal arcuate displacement of bristles secured to the brush head modules. An adjustable support positions the bristles over the image surface for contact with the liquid gel dispensed thereon by the liquid gel applicator. A conveyor displaces the support with the image surface facing up under the liquid gel applicator and the bristles of the brush head modules along a straight axis whereby reciprocating displacement of the bristles imparts brush stroke patterns in the liquid gel over the image surface.

A touch control display screen with built-in membrane antenna array lattice electromagnetic induction layer, including at least a display screen and a shell; wherein an induction layer is provided in the rear of the display screen, the output of the induction layer is connected to an induction control circuit, a display screen control circuit is also provided in the shell; the induction layer is the antenna array printed on the insulation membrane and arranged along the X, Y axes, therein the area enclosed by each lattice unit constitutes one induction cell. Because the electromagnetic induction layer is provided in the rear of the display screen and flexible membrane-type, printed electromagnetic induction array antenna is used as the identifying induction component according to the present invention, the manufacture is easy, the cost is low, and the advantage in cost-cut is prominent in comparison with the prior art when the area of the display screen is larger. The accuracy of identification is high, and the mouse information or handwriting information can be input exactly by means of brush strokes of finger strokes; as a touch screen, the display screen is covered by a protecting film to avoid the physical damage, so it has long operating life.

A method, system, and computer-readable storage medium for simulating bristle brush behavior in an image editing application may use stiffness-height parameterization to determine the height of a brush tool above a canvas during a brush stroke. The determination may be dependent on the pressure applied during the stroke (e.g., using a stylus on a pressure-sensitive tablet), and on the stiffness of the brush bristles. The system may select a standard-stiffness or high-stiffness mapping between stylus pressure values and brush height values dependent whether the bristle stiffness value is above or below a pre-determined threshold. The standard-stiffness mapping may apply a linear function to pressure values to determine height values. Using the high-stiffness mapping, the effect of increased pressure on corresponding brush height values may be reduced as bristle stiffness is increased. Adjusting pressure-to-height mapping based on stiffness may allow the system to realistically mimic the behavior of stiff bristle brushes.

The invention discloses a computer-assisted sketch drawing method and system based on eye movement and brush stroke data. The method includes the following steps that feature extraction is conducted on eye movement data and brush stroke data of a designer, and eye movement feature parameters and brush stroke feature parameters are obtained; the eye movement data and the brush stroke data are collected and obtained in a sketch drawing process by using a computer; whether the current state of the designer is a creative thinking state is judged according to the eye movement feature parameters and the brush stroke feature parameters; when the designer is in the creative thinking state, the next staring point position of the designer is judged according to the eye movement data, and an image stimulus source is shown at the position and assists the designer to conduct sketch drawing. According the eye movement and brush stroke information of the designer, the creative thinking state of the designer is identified and stimulated. By predicting staring point position changes of the designer, the image stimulus source position is optimized, and designing quality of the designer is improved.

Methods and apparatus for simulating fluid motion using procedural shape growth. In a vector-based, fluid motion simulation technique, fluid location may be defined by groups of one or more polygons deposited on a digital canvas. Two or more polygons may overlap. The polygons may be semitransparent. To simulate fluid motion, vertices that specify the edges of each deposited polygon are independently moved. By moving the vertices, a polygon may grow, and fluid motion effects may be simulated, including but not limited to directional flow and blending effects. A randomization technique may be applied to the movement at each vertex to simulate the non-uniform spreading of fluids. Overlapped polygons may be blended with overlapping polygons to simulate the mixing of fluids. The technique may be applied, for example, in watercolor painting simulation, where groups of one or more polygons are deposited using brush strokes.

The invention discloses a pencil sketch simulating and drawing system based on brush stroke. In the system, a three-dimensional geometrical model is used as input, and a pencil sketch picture is generated by combining automatic generation and interaction. The system classifies the brush strokes in the pencil sketch drawing into feature brush strokes and hatch brush strokes, and performs simulation and drawing respectively. The system mainly comprises a user interaction module, a feature path automatic generation module, a hatch path automatic generation module, a module for generating brush strokes from paths and a drawing output module. The system disclosed by the invention conforms to the actual pencil sketch creation mechanism of the human, realizes a real drawing effect, is easy to edit and modify and the like, and has important application values in the aspects of computer-aided design, artistic design, special effects, digital entertainment and the like.

An electric toothbrush in which the brushing head moves in an elliptical motion such that, on the brushing stroke, the bristles are proximate the teeth, and in the recovery portion of the cycle the bristles are pulled away from the teeth. A position sensitive switch automatically switches from a forward to a reverse operation of the electric motor, depending on the positioning of the toothbrush in a user's hand, allowing the user to brush both the upper and lower teeth using a stroke carrying the bristles from the gum line to the ends of the teeth, as is recommended by dental professionals, without having to move the toothbrush from hand to hand or manually move the switch from the forward to the reverse positions. A bridge pad engages the face of the teeth, maintaining a proper distance between the teeth and bristles during the elliptical rotation of the brush head.

The invention discloses a traditional Chinese painting identification method based on Radon BEMD (bidimensional empirical mode decomposition) transformation. The method comprises the following steps: authentic works and fake works of a certain traditional Chinese painting painter are collected according to a same resolution to form a painting library; a small piece with the same length and width and with abundant brush strokes is collected from each painting so as to form a sample library; characteristics are extracted from each sample so as to form a characteristic vector library; a random extractor is used to divide the characteristic vector library into a training set and a test set; a plurality of comparably good classification models are trained according to a 0.623 self-service method and a support vector machine method, and an ROC (receiver operating characteristic) curve is used as an assessment standard; and an expert ballot method is used to identify the concentrated characteristic vector in a test, and a result is outputted in terms of an identification accuracy. The method of the invention does not require comparing and analyzing a plurality of small contents in the authentic and fake traditional Chinese paintings; and the method can be applied to a wider area and is more operable; in the method, after the noise and the balance are screened out, the characteristics are extracted to prevent interference caused by the noise; and the identification accuracy of authentic and fake traditional Chinese painting digital images is improved.

An electric toothbrush in which the brushing head moves in an elliptical motion such that, on the brushing stroke, the bristles are proximate the teeth, and in the recovery portion of the cycle the bristles are pulled away from the teeth. A position sensitive switch automatically switches from a forward to a reverse operation of the electric motor, depending on the positioning of the toothbrush in a user's hand, allowing the user to brush both the upper and lower teeth using a stroke carrying the bristles from the gum line to the ends of the teeth, as is recommended by dental professionals, without having to move the toothbrush from hand to hand or manually move the switch from the forward to the reverse positions. A bridge pad engages the face of the teeth, maintaining a proper distance between the teeth and bristles during the elliptical rotation of the brush head.

A laminated assembly (10) comprising a substrate (100) with an image (103) thereon, has a first film (20) with a brush stroke texture embossed therein (21), a second film (40) with a canvas texture embossed therein (41) to create a final product having the appearance of a piece of fine art.

A method and system for segmenting tubular or stroke-like structures in 2D images is disclosed. Examples of such structures include, but are not limited to, blood vessels, bones, roads, rivers, electrical wirings, and brush-strokes. User inputs identifying a first region on the image inside of a tubular structure and a second region of the image outside of the tubular structure are received. Based on this information, an ordered series of pearls are generated along the tubular structure. Pearls are 2D disks, each having a center location and a radius determined based on local pixel intensities in the image. A continuous model of the tubular structure is generated by interpolating the center locations and radii of the ordered series of pearls.

The invention relates to a brush stroke display method which is applied to an electronic device supporting brush stroke input. The brush stroke display method comprises the following steps: (a) detecting a movement trajectory and successively acquiring a plurality of original points along with the movement of the movement trajectory; (b) judging whether a new interval formed between the newly acquired original point and the former original point is greater than a set value; (c) if the first interval is greater than the set value, inserting at least one compensation point between every two adjacent original points so as to form a plurality of subintervals, so that a second interval of every two adjacent subintervals is smaller than a set valve; (d) judging a pressure sensitivity value corresponding to each point so as to determine the brush stroke width corresponding to each point, and describing the formed brush stroke corresponding to the movement trajectory. According to the brush stroke display method, the correspondingly formed brush stroke is continuous and is not easy to interrupt, the brush stroke can dynamically generate a corresponding thickness change, and further a more real operation feeling is brought to a user.

A method and apparatus for producing simulated oil paintings by means of a variety of commercial software programs. A digital color image is created and printed on to a substrate. Also printed on to the same substrate and registered thereto, is a slow drying, clear, embossing liquid in the pattern of brush strokes derived from one or more of the colors printed on to the substrate. A thermographic powder is dusted onto the embossing liquid while still wet and excess powder removed. The substrate is then heated to dry and raise the brush stroke pattern of the embossing ink to create a three dimensional effect on the substrate. The raised brush stroke pattern in combination with printed color image creates a work that has the three dimensional effect simulating an original oil painting.

The invention discloses a drawing board function based on cells. The drawing board function based on the cells is characterized in that a background canvas is divided into a plurality of cells, and the thickness lower limit of a brush stroke is defined to be a cell, i.e. the cell equals to a point. Through one click to a screen, which cell is the point clicked in can be judged, the cell can be filled with current color of the brush stroke, and continuous points can be drawn through moving on the screen. The thickness of the brush stroke can be selected through a drop-down option; through a color tool bar, a background color and colors which are used recently can be stored, and the current color of the brush stroke can be selected; and through a color selecting cell matrix, the color tool bar can be operated, and the current color of the brush stroke can be selected.

A texture processing unit 54 carries out texture processing on data of a plurality of pixels selected by a processing object selection unit 53 using the same brush stroke pattern and respective colors of the pixels. A hatching processing unit 55 carries out hatching processing of adding diagonal expression substantially perpendicular to the orientation of the stroke pattern on data of an area of low luminance (i.e., dark) pixels from among the image data including YUV components using the respective colors of the pixels. The composition unit 56 carries out composition processing of compositing the image data outputted from the hatching processing unit 55 with the image data outputted from the texture processing unit 54.

An electrostatic chuck 10 includes a disc-shaped alumina ceramic base 12, and a heater electrode 14 and an electrostatic electrode 16 that are embedded in the alumina ceramic base 12. An upper surface of the alumina ceramic base 12 functions as a wafer-receiving surface 12a. The heater electrode 14 is formed in a pattern shape, for example, in the manner of a single brush stroke so as to be arranged over the entire surface of the alumina ceramic base 12. When a voltage is applied to the heater electrode 14, the heater electrode 14 generates heat, and heats a wafer W. This heater electrode 14 contains TiSi2 as a main component.

Included are embodiments of product performance and perception modeling. At least some embodiments include receiving a product geometry for a simulated toothbrush, the product geometry defining a physical product characteristic of the simulated toothbrush, receiving an environmental geometry for a simulated mouth, the environmental geometry defining a physical mouth characteristic and a perspective characteristic of the simulated mouth, and applying a simulated plaque indication layer in the simulated mouth. Similarly, some embodiments include applying a predetermined brushing stroke of the simulated toothbrush in the simulated mouth, determining sensory performance of the simulated toothbrush from the predetermined brushing stroke, and generating a scorecard indicating the sensory performance of the simulated toothbrush.

The invention provides a calligraphic handwriting presentation method based on an optical principle. The method comprises the following steps: acquiring a brush stroke image drawn on a handwriting board by a user through a writing brush, wherein the handwriting board is a light transmission board; arranging a light source in the corresponding position of the handwriting board based on a mode of generating the image on the handwriting board to form the image on the surface of contact between the writing brush and the handwriting board; sending the acquired brush stroke image to an image processing device by a photoelectric image sensor; collecting the brush stroke image in real time by the image processing device, processing the collected brush stroke image, extracting brush stroke shape profile data, drawing the brush stroke shape profile data on canvas, filling the drawn brush stroke shape profile with color, forming a calligraphic handwriting by the continuously drawn color-filled brush stroke shape profile, and presenting the canvas on a display device. Through the method, a conventional writing brush can still be used by the user, the image on the canvas is relatively close to the simulation effect of the image really drawn by the user, and the hardware requirement is relatively low.