EP2796070A1 - Agencement d'outil pour consultation de coiffure et procédé - Google Patents

Agencement d'outil pour consultation de coiffure et procédé Download PDF

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Publication number
EP2796070A1
EP2796070A1 EP13164821.4A EP13164821A EP2796070A1 EP 2796070 A1 EP2796070 A1 EP 2796070A1 EP 13164821 A EP13164821 A EP 13164821A EP 2796070 A1 EP2796070 A1 EP 2796070A1
Authority
EP
European Patent Office
Prior art keywords
hair
color
model
image
video camera
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13164821.4A
Other languages
German (de)
English (en)
Inventor
Michael Franke
Dieter Hans Josef Langsch
Marika Markobasic
Oliver Von Sartori-Montecroce
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Procter and Gamble Co
Original Assignee
Procter and Gamble Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Procter and Gamble Co filed Critical Procter and Gamble Co
Priority to EP13164821.4A priority Critical patent/EP2796070A1/fr
Priority to PCT/US2014/034915 priority patent/WO2014176215A2/fr
Priority to JP2016510728A priority patent/JP6224822B2/ja
Priority to US14/258,900 priority patent/US10251462B2/en
Priority to CA2907718A priority patent/CA2907718A1/fr
Priority to EP14725341.3A priority patent/EP2988624B1/fr
Priority to BR112015026910A priority patent/BR112015026910A2/pt
Publication of EP2796070A1 publication Critical patent/EP2796070A1/fr
Priority to JP2017151235A priority patent/JP2017216732A/ja
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D44/00—Other cosmetic or toiletry articles, e.g. for hairdressers' rooms
    • A45D44/005—Other cosmetic or toiletry articles, e.g. for hairdressers' rooms for selecting or displaying personal cosmetic colours or hairstyle

Definitions

  • the invention relates to a hair consultation tool arrangement
  • a digital video camera adapted for continuously taking pictures at least of the model's head and hair, the model being a human being or an artificial mannequin.
  • the digital video camera might also take a broader view of the model, such as a portrait containing also the model's head and hair.
  • This tool arrangement comprises a processing unit having a camera interface for collecting pictures recorded by the digital video camera, a processor with an image processing software tool implemented for processing the collected pictures, a display interface for sending the processed pictures to a display device and a display device for presenting the pictures.
  • Pictures in the sense of this invention do include both, still pictures and also running pictures (movies) composed of a continuous sequence of recorded pictures.
  • the hair consultation tool arrangement is particularly adapted to a hair color simulation.
  • the invention further relates to a respective method and a computer program product.
  • a method for hair color consultation is known, for instance, from the EP 1 147 722 A1 , which uses a two-dimensional static digital portrait taken by a camera, in which desired hair style color is input selectively and shown on a display screen.
  • desired hair style color is input selectively and shown on a display screen.
  • Such result looks static and unnatural because the use of one single still picture cannot give a real live impression as if the customer looks into a mirror in which the customer is confronted with his/her new hair color combined with a genuine live facial expression.
  • US 2004/0239689 Al is based on the one hand on a dynamic video image (movie) and on the other hand on a change in color of the natural hair of the person.
  • the video image is prepared in real time and reproduced on a mirror-like screen in such a way that it is the impression of the customer to use a mirror, by using one device, onto which both the video camera and the display for presenting the processed pictures are installed.
  • the user is able to view his/her hair as seen from the side or the rear of the head on the display, similar to a simple single mirror.
  • Another drawback of the presented system is that the image processing is sometimes difficult because it is not easy to decide for the computer system software tool which part of the image is the hair region of the customer, the hair color of which has to be changed in order to present to the customer a realistic virtual image of a future hair coloring.
  • the display device is a portable display device connected to a display interface of the processing unit and that a rotational device is disposed in the focus of said digital video camera such that the model's head and hair are imaged in the pictures recorded by said digital video camera, said rotational device allowing a rotation of the model's head while remaining disposed in the focus of said digital video camera.
  • the rotational device is a revolving chair for a human being as a model or plateau for an artificial mannequin as a model.
  • the rotational device might also be a plateau onto which the model is standing.
  • the model might turn around him/herself, while remaining disposed in the focus of said digital video camera.
  • the portable or mobile display offers the possibility of more different views of the customer's head and hair, and in particular also a rear view.
  • the portable display device is connected to the display interface of the processing unit.
  • the display device of the processing interface is using a wireless communication, such as WLAN, Bluetooth or the like, for establishing data communication between the processing unit and the display device via the display interface.
  • the processing unit might also be included into the portable display device.
  • the connection to the display interface of the processing unit is a connection using an internal display interface.
  • the use of the portable display device and preferably also of the wireless communication between an in particular external processing unit and the display device allows free movement of the model (customer) before the video camera, e.g. a rotation of up to 360° (full rotation), while taking the display device with him or her such that the module views the processed pictures in each rotational position with respect to the video camera. Accordingly, the portable display is moved together with the model whiles displaying continuously the views of the model as seen by the fixed digital video camera.
  • the mobile display rotated together with the model in front of this face creates in combination with the fixed digital video camera a virtual mirror allowing the model customer to see also the back of the head normally not accessible by a simple single mirror.
  • the hair consultation tool arrangement also includes a rotational device, such as a revolving chair or plateau, disposed in the focus of the video camera such that the model's head and hair are imaged in the pictures recorded by the video camera, the revolving chair or plateau allowing a free rotation of the model's head up to 360°, i.e. completely, and/or in certain degree steps, e.g. 45°, 60°, 90°, and so on to the left or the right while remaining disposed in focus of the video camera.
  • a rotational device such as a revolving chair or plateau
  • the revolving chair is defined as a device allowing preferably the model's head to turn around an axis running preferably through the head, and in particular through the center of the head.
  • the model, and in particular the model's head and hair will stay in focus of the digital video camera during the free rotation.
  • the display device may comprise a display processor adapted - e.g. by a suited software installed on the display processor - to execute an application on the display device that is showing the processed image and allowing a user input or setup the system and/or to influence the processed image using input tools.
  • the processor might also include the image processing software tool, in particular in case the processing unit and the display unit build one single integrated unit.
  • a preferred display device is a touch-screen display device, such as a tablet computer, allowing the installation of such applications easily.
  • the input tools might be panels, buttons or the like presented on the display and selectable via the touch-screen.
  • the touch-screen display device might allow as a user input (besides other input options) in particular a finger painting on the image of a picture taken by the camera and displayed on the touch-screen for selecting hair, skin and (if applicable) background areas in the image (in particular of the still picture). This is supporting the step of segmenting the hair in the displayed image.
  • the finger painting is displayed on the touch screen such that areas selected by finger painting, i.e. by touching with and preferably also moving the finger on the touch screen in a zone of the touch screen where the image of the picture is displayed, are shown (highlighted) as a defined colors layered over the original image.
  • the colors might be predefined as different colors for the selection of hair and skin and/or other areas respectively.
  • background areas can be or are selected
  • the color of the area selected by finger painting might be the same color as used for the skin area or a color different from the colors of the highlighted hair and the skin areas.
  • There might also be a separate user input e.g. a button on the touch screen or other, for indicating that the finger painting performed after actuation of the separate user input will be a selection of a hair or skin (or background, if applicable) area.
  • an area is already selected by finger painting and highlighted on the display with the respective color, it might be useful to deselect an area or parts of an area by simply touching selected areas again.
  • a separate user input e.g. a button on the touch screen or other, for indicating that the finger printing performed after actuation of the separate user input will be a deselection of previously selected areas.
  • the hair consultation tool arrangement might comprise according to a preferred embodiment of the invention additionally an illumination device directed towards the model's head and hair for illuminating exactly this part of the model imaged by the digital video camera.
  • the use of such an illumination device has two major positive effects on the result of the hair consultation process, i.e. the presented processed pictures on the display.
  • the first advantage is to have a light temperature predominantly defined, allowing for image calibration of the used display.
  • the current systems contain a white point balance providing a neutral image to the image processing unit. This enhances a more natural and pleasant image on the display device.
  • the second advantage is to be able to control the illumination of the scene: more light on the head, being it the main area of interest, thus producing more shine; less light to the face making the persons appearance more pleasurable; enough diffuse light to avoid shadows on the face that would hinder the segmentation and image processing.
  • This aspect is related to the fact that the hair and head region illuminated by the illumination device is brighter and the natural hair color and structure can be identified more precisely by the image processing software tool because the color temperature of the illumination device is defined and known to the image processing software tool. This allows a calibrated or more precise determination of the natural hair color. As the hair region is better illuminated, the hair structure can be evaluated more precisely by the image processing software tool. This leads to a better masking of the hair region and thus to a better identification of the parts of the image to which the change in the color has to be performed.
  • Another aspect is related to the setup and calibration of the tool arrangement during which the exposure time for each picture recorded by the digital video camera, in particular depending on the model's natural hair color, is determined such that the texture of the image or the dynamic range of the light intensities of the camera records in the hair region of the model is in an optimum range for image processing. Due to the additional illumination, the range of possible combinations of aperture and exposure time of the recorded pictures is much broader and can be adjusted optimally. Generally, the brighter the object to be imaged by the video camera is, the shorter the exposure time of each picture can be chosen thus allowing a higher picture rate in the continuous picture sequence (movie) though the frame rate, of course, is not only limited by the exposure time.
  • a HDR camera High Dynamic Range
  • This HDR method is used to capture a greater dynamic range between the lightest and darkest areas of an image than current standard digital imaging methods or cameras.
  • HDR cameras often take multiple pictures at different exposure times and stitch the different pictures together to produce a resulting image that is representative in both dark and bright areas. The several pictures are taken preferably in a very short sequence to have the utmost identical scene in all the pictures used for the HDR method.
  • some digital cameras can obtain a HDR image from a single image captured.
  • a HDR image will preferably be recorded as at least a 12 bit image.
  • the illumination device might comprise at least two different lighting modules, one of the lighting modules being a diffuse light module creating a diffuse light and the other of the at least two lighting modules being a spotlight module creating a spotlight.
  • the spotlight module might in particular by a point light module having at least one point light source.
  • the illumination of the model is preferably made of a mixture of diffuse light and spotlight.
  • the diffuse light enhances the image segregation of certain image areas, i.e. the separation of the hair region being the region of interest according to the invention and other image areas, such as face or background.
  • the spot (or specula) light is in particular used to provide a natural shine to the hair and to enhance a natural color to the skin. Accordingly, these two different lighting modules (diffuse and spot light module) according to the invention improve the image quality of the processed pictures.
  • At least one light source of the diffuse light module is positioned basically in the same plane with the video camera, said plane being directed according to a preferred embodiment basically perpendicular to the optical axis of the video camera.
  • the diffuse light module might comprise at least two light sources, preferably three light sources and most preferably four light sources arranged around the digital video camera.
  • all light sources of the diffuse light module can be arranged in the same plane, and in particular in the same plane with the digital video camera.
  • the created diffuse light is directed towards the model in the same or a similar direction as the view direction of the digital camera thereby reducing disturbing shadows on the model's surface, i.e. the face and the hair of the model.
  • the diffuse light module having one or preferably more than one light source enhances the identification of the hair region, the color of which is selectively to be changed by the hair consultation tool arrangement system while the other regions such as face and background shall remain unchanged in order to avoid not desired artifacts in the processed pictures. This leads to notably better quality of the processed pictures much closer to the natural look of a customer with the virtual hair color.
  • the light sources used in the diffuse light module might have an elongated form, such as tubular fluorescent tubes.
  • the elongated form generates a distributed light emission along the elongation of the light sources abetting a diffuse light generation.
  • the light sources might be covered by a diffuser, such as a translucent glass, in order to produce a high quality diffuse light with an almost equally distributed light intensity on the object of interest, i.e. the model's head and hair.
  • a spotlight module is provided creating a spotlight on the model and in particular on the model's head and hair.
  • a light source of the spotlight module is preferably disposed to light up the model's hair with a spotlight or point light.
  • the light source might be adjustable to emit the spotlight cone in an angle between 0° and 90° with respect to the optical axis of the digital camera. This means that the light source of the spotlight is disposed in the space between the camera and the model with a certain distance to the optical axis such that the light source itself is not seen in the image.
  • the light cone of the spotlight source is directed towards the model. If the optical axis of the camera and the middle axis of the light cone are brought to an intersection (e.g. because they intersect each other in real or as they are shifted theoretically in parallel to intersect each other), the smaller angle between these axis is between 0° to 90°. This is meant by the before identified feature.
  • the light source of the spot light module is disposed in the space between the camera and the model or - with respect to the model - behind the camera then having preferably a very reduced opening angle and directed towards the model. This is a situation of no backlighting.
  • the spotlight is lighting up the model's head and hair from the top or top side with respect to the optical axis of the video camera thus bringing a light brilliance to the hair region of the model being of most interest and enhancing the plasticity of the face by introducing some shadows in the mid brightness range to the model's face.
  • the shadows produced by the spotlight are too strong and have a negative influence on the optical reception of the picture by the customer and the image processing ability.
  • Backlighting is defined as illumination of a light source located in space opposite to the digital video camera relative to the model.
  • the light source of the spotlight module might according to an embodiment of the present invention be attached to a hinged bracket which is fixed to a module carrying the digital camera (camera support) avoiding thus a positioning of the spotlight in a way to create a backlighting situation.
  • the processing unit might be adapted - by respective software installed on the processor - to recognize a backlighting situation in the collected pictures by means of the image processing software tool and to send a warning message to the display interface for being displayed on the display device. This is a user friendly support helping to optimize the setup and calibration of the illumination module.
  • the processing unit might also be adapted to recognize by means of the image processing software tool in the recorded (and collected) pictures other effects not desired, such as a unpleasant shadow direction or a to low or high intensity of the spotlight, and might inform the user accordingly.
  • a user is able to arrange the spotlight in a better (optimum) position to achieve the best quality available in the processed pictures.
  • the light sources of the diffuse light module and/or the spotlight module might be daylight lamps and/or warm tone lamps.
  • the light source of the diffuse light module may be a cold white lamp (e.g. approximately 4000K between warm white and daylight white) enabling a good assessment of hair colors.
  • the light source of the spotlight module might preferably be at the same color temperature as the diffuse light.
  • the one, more or all light sources might be controllable by the processing unit, i.e. the processing unit might be adapted to switch on and off and/or to calibrate the light sources.
  • Calibration might include control of the light intensity and/or the light temperature of the light sources, depending on the possibilities of adjustment of the different light sources used.
  • Applications installed on the display device equipped with a display processor might be used to initialize the hair consultation process including a calibration of the hair consultation tool arrangement (performed e.g. by the processing unit) and/or to control the hair consultation process.
  • the display device is sending respective commands to the processing unit via the display interface.
  • the display device according to this preferred embodiment is accordingly acting as an input and control panel of the processing unit.
  • a processing unit can also be directly controlled by an input device connected to the processing unit, such as a key pad.
  • a voice-controlled processing is possible, either directly or via a tablet unit providing e.g. also a combination of a voice and key pad control.
  • a monitor might be connected directly to the processing unit to allow an optical control of the input and the system.
  • the processing unit might be a conventional desktop computer.
  • the supervisor controlling the processing device with the keypad and the monitor might accordingly be a hair stylist or consultant.
  • the same functionality can be offered in an administrator mode of the application running on the display device. It is also possible that two display devices are connected in parallel to the processing unit, being a costumer display device in the customer mode and a stylist display device in the administrator mode, the latter allowing e.g. a more detailed input of parameters for the hair consultation.
  • the processing unit of the hair consultation tool arrangement might be adapted - e.g. by a suited software installed on the processor of the processing unit - to perform a hair color simulation in which the hair color of the model's hair is amended by replacing the natural hair color in the continuously collected pictures by a color determinable and determined by an user input.
  • the resulting processed pictures are continuously presented on the display device, in particular also while the model is rotating on the rotational device.
  • the processor of the processing unit might be adapted - e.g. by a suited software installed on the processor - to perform at least a selection of the following steps:
  • the display processor of the display device might also be adapted - e.g. by a suited software installed on the display processor - to run an application performing at least a selection of the following functions:
  • a powerful input and control panel is provided to the user which allows intuitive handling and is powerful in connection with the processing unit for processing the input parameters and for influencing the outcome of the processed pictures.
  • processing unit and the display unit are described as separate units, it is clear to the one skilled in the art that the processing unit (in particular used by the image processing software tool) and the display unit might be combined in one single unit.
  • a preferred embodiment includes the processing unit into a mobile display unit having the processor power to perform the image processing in a near real time manner.
  • the digital video camera and the illumination device are integrated into a camera support thereby defining an integrated arrangement of the illumination module and the video camera.
  • the position of the light sources of the diffuse illumination module and the camera are fixed in an optimum way.
  • a mirror and/or a display holder might be integrated into the camera support.
  • the camera support might be used as a conventional-like virtual mirror. This gives the opportunity that the customer might survey the effects of the color change while the hair stylist is styling the customers hair.
  • the display holder might be equipped with a charging unit to recharge the accumulator of the display device such that the display device is energized efficiently if taken out of the holder to have the benefit of the portable display holder and enabling a virtual 360° mirror.
  • a defined background element might be disposed behind the model in view of the video camera, the background element having in particular one defined color (mono-colored background).
  • a suited background is a blue or green background which is often used in the image processing technology to ease masking of a model in front of said background.
  • Another option is to take a picture of the environment, e.g. a room or the background, before the customers appears. The content of this picture can be recognized as background (as long as it remains unchanged) while the customer is situated in the foreground.
  • the invention is further directed to a method for a hair consultation using the hair consultation tool arrangement as described before or parts thereof for a hair color consultation.
  • the method comprises in particular the steps of:
  • the invention is directed to a computer program product implementing the before method on a processing unit that is part of a hair consultation tool arrangement or parts thereof as described before.
  • a hair consultation tool arrangement 1 for use in a hair salon, beauty parlor, retail shop or even at home comprising a digital video camera 2 adapted for continuously taking pictures of a model's head and hair 3.
  • the model 3 is an artificial mannequin.
  • a living human being can be positioned of course as model 3 in front of the digital video camera 2 for taking pictures of the human being's head and hair.
  • the hair consultation tool arrangement 1 comprises further a processing unit 4 having a camera interface for collecting pictures recorded by the digital video camera 2.
  • the processing unit 4 is shown as a schematic box.
  • a processor (not shown) is provided with an image processing software tool implemented for processing the pictures recorded by the video camera 2 and collected by the processing unit 4 via the camera interface.
  • the processing unit 4 further has a display interface for sending the processed pictures 6 to a display device 5.
  • the display device 5 is provided for presenting the processed pictures 6 to the customer and/or user being for example the model 3.
  • the display device 5 is a portable display device 5 connected to the display interface of the processing unit 4 by means of a wireless communication such as WLAN, Bluetooth, or the like. Using this wireless communication, a data communication between the processing unit 4 and the display device 5 is implemented allowing for sending the processed pictures 6 from the processing unit 4 to the display device 5 and for transmitting user commands input into the portable display device 5 to the processing unit 4.
  • a wireless communication such as WLAN, Bluetooth, or the like.
  • the model 3 is disposed on a revolving chair 7 (including a revolving plateau for disposing an artificial mannequin) allowing a up to 360° rotation of the revolving chair 7 such that the model's head and hair 3 are imaged in the pictures recorded by the video camera 2 in each rotational position of the revolving chair 7.
  • a up to 360° image sequence of the model 3 can be processed.
  • the display device 5 is a portable display device 5, such as a tablet computer, which might be hold by a human being model 3 during rotation on the revolving chair 7.
  • the model 3 can view his image recorded by the digital video camera 2 in real time as processed picture 6 on the display device 5 while rotating with the revolving chair 7.
  • the present invention creates a virtual mirror allowing - in contrast to a real mirror attached to the wall - also to display rear views of the head and hair of the model 3 in real time.
  • the hair consultation tool arrangement 1 comprises further an illumination device 8 directed towards the model's head and hair 3 for illuminating the part of interest of the model 3 recorded by the digital video camera 2.
  • the illumination device 8 comprises two different lighting modules 9 and 10, wherein the lighting module 9 is a diffuse light module and the lighting module 10 is a spotlight module.
  • the diffuse light module 9 creates a diffuse light and comprises in the example shown four light sources 9.1 to 9.4 built as elongated tubular fluorescent tubes.
  • the light sources 9.1 to 9.4 of the diffuse light module 9 might be positioned in the same plane with the video camera 2 said plane being directed approximately perpendicular to the optical axis of the video camera according to a preferred embodiment.
  • the video camera 2 is positioned somewhere between all light sources 9.1 to 9.4 arranged to surround the digital video camera 2. This enhances the equal light intensity distribution of the light emitted by the diffuse light module 9 with respect to the view direction of the digital video camera 2 and the model 3.
  • the light sources might be direct light sources facing the model 3 directly (as shown in Fig. 1 ) or indirect light sources facing the model 3 indirectly using a reflecting surface such a foil, a mirror, a screen or the like (as not shown in the drawings).
  • the light sources 9.1 to 9.4 might be covered by a diffuser 11 such as a translucent glass plate in front of the light sources 9.1 to 9.4.
  • the diffuse light allows an optimum image segregation as the texture in the recorded images is high allowing the image processing software tool to precisely differentiate between different areas in the pictures.
  • Another light source 10.1 of the spotlight module 10 is provided and disposed to light up the model's hair 3 with a spotlight.
  • the light source can be adjustable to emit the spotlight in an angle between 0° and 90° with respect to the optical axis of the digital camera in any rotational position around the optical axis of the camera.
  • the spotlight module 10 might be fixed by a hinged bracket 12 to a camera support 13 including the digital video camera 2, the diffuse light module 9 with the diffusor 11, the spotlight module 10 with the hinged bracket 12, the processing unit 4 and a mirror 14 positioned somewhere within a frame defined by diffuse light sources 9.1 to 9.4 surrounding also the digital video camera 2.
  • the mirror 14 might be a traditional glass mirror having a hole for the digital video camera 2, a semi-transparent mirror allowing the video camera 2 to record pictures through the semi-transparent mirror or a digital mirror, the latter being a display unit such as a computer screen, a TV screen or a movable tablet computer showing in real time the pictures recorded by the digital video camera 2.
  • the camera support 13 as described before is a preferred embodiment of the current invention.
  • the different parts of the camera support 13 can be separate parts arranged in a suitable manner to allow the before described functionality.
  • the light sources 9.1 to 9.4 and 10.1 might be controlled by the processing unit 4, i.e. for example be switched off and on and calibrated by means of the processing unit 4.
  • the light sources 9.1 to 9.4 of the diffuse light module 9 and the light source 10.1 of the spotlight module 10 are cold white lamps (approximately 4000K).
  • a mono-colored background 15 is optionally being disposed behind the model 3.
  • the background color might be in particular blue or green for distinguishing the model 3 clearly from the background 15 and enhancing thus a creative power of the image processing software tool.
  • the process of hair consultation is described on basis of the preferred example of a hair color simulation.
  • This process is mainly performed by the processor of the processing unit 4 in which suited software tools are implemented to perform the following steps.
  • the display device 5 might be used.
  • the display device 5 is a portable display device, such as a tablet computer, with an application implemented on the display processor allowing user interaction and input in communication with the processing unit 4.
  • the setup and calibration of the illumination device 8 and the video camera 2 are performed.
  • the model 3 is already positioned on the revolving chair 7 while performing the calibration steps.
  • a respective calibration process might be performed again initiated e.g. by a respective user input on the portable display device 5.
  • the lighting is tested by the image processing software tool in order to ensure satisfactory hair segmentation, while the overall image is rendered real-like.
  • the image processing software tool might give a feedback to the illumination device 8 regarding the adjustment of intensity, color temperature and so on, to adjust the controllable light sources 9.1 to 9.4 and 10.1 of the different lighting modules 9, 10 until an optimum result of the recorded picture is obtained as defined by the image processing software tool.
  • the processing software might as well adjust the camera settings to calibrate the image.
  • the white point of the white point of the camera is set and the exposure time is adjusted. Further, modification of the aperture of the camera is possible.
  • the color calibration can be done directly through adjusting thru the display device 5 held in front of camera display a standard white or grey color.
  • the advantage is that the color calibration of the camera 2 includes the color calibration of the display device 5
  • the exposure time of the video camera 2 is determined depending on the model's hair color for ensuring real-like rendering of the hair and a sufficient texture for the virtual color treatment of the hair to be performed in the further steps.
  • the following step S2 is a calibration of a still picture taken of the model 3.
  • a still picture is taken and calibrated by the image processing software tool in order to render a real-like image by selectively altering e.g. brightness of some areas of the face, e.g. the skin. For example, darkening of the skin leads often to a natural appearance of the picture.
  • Further auto-adjusting tools can be applied to the recorded picture by the image processing software tool.
  • the determined parameters for an optimum processed picture are stored and apply in the following to the continuously recorded pictures for creating a real time movie image. For example it is possible to decrease the brightness of the whole image after colorization of the hair area. The idea is to dispose of a brighter image for colorization obtaining more information within the hair area.
  • the still picture is displayed on the display device 5 for initiating the next process step S3 directed to the segmentation of the hair area.
  • This step is preferably performed in interaction with the user being able to identify, e.g. by a manual selection using finger painting on a touch-screen display device 5, the hair areas from other areas of the image, such as skin and background. This might be performed by easily highlighting selectively the hair areas as well as the background areas by a finger painting on the still image displayed on the touch-screen and sending the information back to the processing unit 4. This is an easy and intuitive process for selecting the hair area allowing a simple discrimination between hair, skin and background.
  • This step S3 might be left out according to the invention if the system automatically recognizes any kind of hair and skin. Therefore the system is equipped with a library.
  • This library might be "intelligent", learning from the performed cases.
  • the image processing software tool is selecting the complete hair area in the still picture and correlates this hair area with a specific color pattern.
  • the color pattern is e.g. the rgb color space.
  • the correlation might be performed by assigning certain color pattern values to the pixels being identified as pixels of the hair region.
  • tracking features of the face might be used as generally known in the image processing technology. Further masks might be used for spotting eyes, mouth, teeth and/or other parts of the face or background.
  • the segmentation of the entire hair area might be performed by creating a hair mask confined versus the other image areas.
  • This hair mask is basically based on identifying the natural hair color pattern values and allowing a certain range of these color pattern values to select pixels showing hair in the image to be processed.
  • the entire hair area is segmented in each processed picture of the continuously collected pictures (including as first picture also of the still picture) based on the specific color pattern (i.e. the color pattern value range) and creating a virtual hair mask for each processed picture.
  • a hair color selected by the user is applied to the virtual hair mask.
  • the user might be prompted on the display device 5 to select a certain color out of a color pattern displayed on the image device 5.
  • the application of the selected hair color to the virtual hair is performed by the image processing software tool in the processing unit 4.
  • the colorization of the hair piece might be performed by "warping" the histogram of the original hair to the histogram of a selected hair image. The hair is then layered over the original image.
  • the image resulting from S6 is then processed to be ready for displaying. This can include modification of brightness and gamma value and/or color correction with regard to the used display. It is also possible to just adopt the resolution of the image to the resolution of the display device. After having processed the picture, the processed picture is send to the display device 5 for presenting an image of the model 3 with the virtual hair mask in the desired color (step S7).
  • the processor of the processing unit 4 After sending the processed image 6 to the display device 5, the processor of the processing unit 4 returns to step S5 and starts defining a new hair piece for the next picture to be processed.
  • the process continues until the user stops or switches off the hair consultation tool arrangement. This allows the model 3 to rotate the head while receiving a real time image of the view with the hair color changed to the hair color chosen by the user.
  • the tool according to the present invention can be used, optionally in conjunction with separate measurements of the models hair, with a system capable of creating the target hair color product to obtain the desired hair color, and optionally producing the target hair color product.

Landscapes

  • Image Processing (AREA)
EP13164821.4A 2013-04-23 2013-04-23 Agencement d'outil pour consultation de coiffure et procédé Withdrawn EP2796070A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP13164821.4A EP2796070A1 (fr) 2013-04-23 2013-04-23 Agencement d'outil pour consultation de coiffure et procédé
PCT/US2014/034915 WO2014176215A2 (fr) 2013-04-23 2014-04-22 Procédé et agencement d'outil de consultation capillaire
JP2016510728A JP6224822B2 (ja) 2013-04-23 2014-04-22 毛髪コンサルテーションツール装置及び方法
US14/258,900 US10251462B2 (en) 2013-04-23 2014-04-22 Hair consultation tool arrangement and method
CA2907718A CA2907718A1 (fr) 2013-04-23 2014-04-22 Procede et agencement d'outil de consultation capillaire
EP14725341.3A EP2988624B1 (fr) 2013-04-23 2014-04-22 Procédé et agencement d'outil de consultation capillaire
BR112015026910A BR112015026910A2 (pt) 2013-04-23 2014-04-22 arranjo de ferramenta para consulta de cabelo e método
JP2017151235A JP2017216732A (ja) 2013-04-23 2017-08-04 毛髪コンサルテーションツール装置及び方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13164821.4A EP2796070A1 (fr) 2013-04-23 2013-04-23 Agencement d'outil pour consultation de coiffure et procédé

Publications (1)

Publication Number Publication Date
EP2796070A1 true EP2796070A1 (fr) 2014-10-29

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EP13164821.4A Withdrawn EP2796070A1 (fr) 2013-04-23 2013-04-23 Agencement d'outil pour consultation de coiffure et procédé

Country Status (1)

Country Link
EP (1) EP2796070A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1147722A1 (fr) 1999-10-29 2001-10-24 Kao Corporation Systeme de conseil pour colorant capillaire
US20040239689A1 (en) 2001-08-30 2004-12-02 Werner Fertig Method for a hair colour consultation
EP1857015A1 (fr) * 2006-05-16 2007-11-21 Ching-Yu Lin Méthode et appareil de coiffure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1147722A1 (fr) 1999-10-29 2001-10-24 Kao Corporation Systeme de conseil pour colorant capillaire
US20040239689A1 (en) 2001-08-30 2004-12-02 Werner Fertig Method for a hair colour consultation
EP1857015A1 (fr) * 2006-05-16 2007-11-21 Ching-Yu Lin Méthode et appareil de coiffure

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