Suzuki Hisataka 1), Ryotaro Aya 2) Tsuda lily Suzuki 2) Vimuktalop Pinyapach3) Jaruthien Nine3) Shirai Akihiko 4)
1) Kanagawa Institute of Technology and Information Engineering (〒 243-0292 Atsugi, Kanagawa Prefecture Shimoogino 1030 hisataka @ shirai.la) 2) Kanagawa Institute of Technology School of Information and Media Department 3) Culalngkrn Mhawithyalay Phakh Wicha Thekhnoloyi Kar Thay Phaph Laea Kar Phimph (254 Phyathi Khaewng Pthumwan Khet Pthumwan Krungtheph‡ 10330) 4) Kanagawa Institute of Technology ใบ แจ้ง undergraduate ใบ แจ้ง media อา Department Associate Professor Summary: such as home-use game machine, by the FPGA hardware implementation that can multiplex a variety of HDMI input, good has been released from the display manufacturers, for the video settings of an existing passive-type 3D display, calibrated to the default setting and the γ = 2.2 The tion has been when to report the results of the experiments were carried out for changes in display brightness of the keyword: multiplexing, polarization, 3D display 1 , but 3D display for home use in the beginning has been generalized, it is able to well represent the three-dimensional feeling content supply of the current situation is not caught up with the supply of hardware. Looking back on history, 3D stereoscopic image tends to be sedated in there is a tendency to call a transient boom 2-4 years [1] . In the television market in place of the 3D display, it is considered that the increase in products to sell 4K resolution, even this boom is to admit and is inclined subsided. From this background, we As a technology that gives a new added value to the consumer of 3D display, it has proposed a multiplexing invisible video technology "ExPixel" [2]. This technology is circularly polarized light and even odd pixels in consumer products passive type 3D flat panel using the column, it is a technique that can completely present another image against the circularly polarizing filter wearer and naked-eye viewer initially study it had been realized multiplexing invisible image as shader technology that operates in GPU-based, [3] By also succeeded in FPGA hardware implementation in recent years, appropriate viewing area in the existing multiplex consumer content is made possible. In this report in order to view multiplexed invisible images in consumer 3D display investigation of, for good viewing of multiplexing invisible image in a variety of 3D display, is intended to report the results of experiments on the viewing characteristics of the popular passive-type 3D display. Hisataka SUZUKI, Yuria SUZUKI, Ryotaro Tsuda, Vimuktalop Pinyapach, Jaruthien Kea Laea Xa Ki Hi Koa Shirai 2 related research multiplexing the video technology is attempted to have by many researchers by มิส ท รี "ThirdEye" [4] CRT, 120Hz or more in sync with the screen such as LCD projector glasses for performing speed opening and closing of the shutter is proposed the multi-scenario screenings using. Method according to time division using such a high-speed shutter with Fakespace Labs Inc. McDowall et al., "snared สว่าง" [5] and ใช้ งาน ได้ หลากหลาย แสง เครื่องยนต์ (MULE) it has already been proposed by the projector. "ThirdEye" The projection of the naked eye of the viewer to the two are of the video is overlap is not done it will conceal visible but two of the video content in the "snared สว่าง" number of times it is possible to provide sufficient difference, has achieved an invisible video technology in the active shutter system. as "SimulView" multi-player game technology than 2012 US Sony Computer Entertainment, Inc., using the same active shutter and these Although the patented We both channels are multiplexed multiplexed display [6]. In addition, the characteristic investigation of conventional LCD flat panel display has been reported in 2007 by Yamamoto et al. [7]. While in Yamamoto It has also reported characteristics and image quality evaluation technology of flat-panel display [8]. 3 experiment first ExPixel optimum viewing area survey for viewing the multiplexing content by, and in a variety of consumer products 3D display, of ExPixel รหัส content optimum display in order to obtain the was the video setting evaluation was performed three experiments of the following for investigation of research optimum viewing area of 3.1 optimal viewing area in needed in ExPixel passive-type 3D display device variety, of filter together with the presence, Experiment 1) display and the viewer distance (L), Experiment 2) the horizontal position of the viewer relative to the display (the angle θ) Experiment 3) for each of the three experiments of the observer's vertical position relative to the display (the angle θ) The brightness of the display when it is viewed at the position of the measured. measurement position on the display follows the [8], the center of the screen constant region. masked in the display center in this experiment, an area in 25cm2 , by the reflection of. position and display that was used as the representative value of the brightness of the captured display by a digital single-lens NikonD750, set up a camera on a tripod for. display the experimental environment for error occurs you have a dark room with natural light, the brightness Images were taken at each location where it is desired to measure. Figure 1 shows a measurement environment of the linear distance, in 200mm intervals between 2400mm from 1000mm to perpendicular to the center of the display window, the shot in all eight locations The went. Figure ที่ 1: Distance confirm the change in the luminance value due . For Experiment 2, Figure 2 shows a measurement environment when investigated the brightness changes during horizontal viewing position changes in the typical display optimal is the distance of 3 × display height is said viewing distance (H), taken with the presence of circular polarization filter at the position of the total of 12 points so as to be θ = ± 60◦ on 1600mm. Figure 2: Horizontal angle experiment of change of θ in pairs ต์ Ru brightness value after that was 90◦ rotate the display in the vertical direction of the investigation was photographed at the position of a total of six points so take the same position at θ = ± 30◦ and the method of FIG. 2 . The calculation of. angles using a laser rangefinder MK-LAK this time to obtain the distance and angle Co. Samurai Marketing, Inc. is a function of the device, using the Pythagorean theorem mode intensity value (สว่าง) is to shoot an area of central 25cm2 of the display in the camera, the luminance value of the region of interest across the pixel intensity used for. data obtained by the luminance value of the pixel by adding the RGB color values of each pixel of the image adds the value of using the average value divided by the mother number in. This time the experiment was using a certain โต ชิ บา Regza42Z8 in Henhikari-shiki 3D display as is also photographic equipment camera. preliminary experiments using NikonD750, shutter the speed to try by {1/500, / 250, / 125, 1 / 60,1 / 30,1 / 15,1 / 8,1 / 4,1 / 2}, the difference between each shutter speed is constant of was 1/30 reference value that fits in the range. from preliminary experiments, F value at the time. shooting image had turned into remarkably black and white outside of than 1/250 or 1/8 F / 16, ISO was unified at 400. camera and the shooting pattern that does not pinch the circular polarization filter between the display, were taken two patterns of shooting pattern sandwiching the circular polarization filter 4K resolution in the evaluation even now display market of 3.2 display characteristics corresponding display has been widely, 3D is now incorporated as commonplace as part of the function, the future will also ever-this momentum is accelerating. In this section of consumer products currently entering the hand 3D Use the model shown from the display in Table 1, as the center of the setting of brightness and contrast, describe the results of the investigation the appropriate settings for the viewing of ExPixel content Table ที่ 1: 3D display type name that was targeted ฉบับ ที่display type name 1 Toshiba REGZA42Z8 2 SONY BRAVIA KDL-42W800B 3 Ma R Th Thiwi LG 42LB6700 in this survey first returns each product in Table 1 of the setting of the factory state, it was the state the "calibration before" state. First, before calibration "non-use of circularly polarized light filter (no filter)" in each display of state was investigated in 2 pattern in the case of the "Use circular polarization filter (filter there)" In the case of. After that, the Datacolor calibration of each display is performed using the company's Spyder4Elite, all of the display was a "calibration" state. Similarly, research in two of the pattern if the case "yen polarizing filter non-use" of '"yen using a polarizing filter" in each display was carried out, each state comparing the brightness values of. 4 were investigated for changes in the luminance value due to the distance between the results 4.1 specific 4.1.1 distance optimum viewing area and experiment display influence on the luminance value observer. Normally the display luminance determined by ISO, in order to utilize the results obtained in this experiment with a wide display and use the subject of the pixel values from the image photographed by the single-lens camera as สว่าง (ระดับ). in the environment of FIG 1 the distance between the display viewer Te and display brightness 3 in the figure of the results shows ต์. Figure 3: . in between, is almost a straight line of the graph there is no rapid change this, the relationship of normal brightness and illuminance In contrast considered as emission of the point light source, the number of displays are popular, is controlled directivity backlight, it shows that it behaves as a parallel light source. (measured at Therefore this method . you are) Figure 4 shows the relationship between the intensity and the distance in the same condition when it is fitted with a polarizing filter to the camera lens. Figure 4: . extreme decrease in brightness due to the release was not observed overall value for that, since it has fallen to half of Figure 3, the light amount of the pixel rows that are blocked by the circularly polarizing filter is seen that fell but as a phenomenon intensity fell, corresponding to circular polarization filter pixels Since the brightness of the image photographed by the blocking of the column is dropped (Fig. 5) are not without the influence of the distance does not receive even. Figure ที่ 5: circular pixel columns of polarization corresponding to the polarization filter is blocked 4.1.2 horizontal It is the distance angle by the investigated the change in luminance due to the change in the horizontal position of the experiments of the viewer relative to the display luminance value. typical display of the optimal viewing distance of 3 × display height called (H), 1600mm was shot in the upper position of a total of 12 points to take the angle ± 60◦ (Fig. 2) . squarely to the display from FIG. 6, it can be said to have lowered brightness by going angled Figure 6: Horizontal angle θ- luminance (circularly without polarizing filter) in the case same as the distance experiments when passed through a circularly polarized light filter from FIG. 7, the overall brightness is fallen, that does not pass through the circularly polarizing filter as trend graphs . is the same Figure 7: horizontal angle θ- brightness (¥ There polarization filter) . investigated the change in brightness due to the change in the vertical angle θ of 4.1 3 observation on experimental display of brightness value by the vertical angle person to the display in this study The 90◦ rotating method is Figure 2 on the allowed and it becomes θ = ± 30◦ at the same position taken at the position of the six points as. similar horizontal direction even if with the vertical direction angle, the angle is attached that reduction of brightness value by was confirmed (Figure 8 Figure 9). Figure 8: vertical angle θ--brightness (¥ without polarizing filter) Figure 9: vertical angle θ--brightness (with circularly polarized light filter) 4.2 for each display Comparison existing popular passive type 3D flat-panel intensity values, and the luminance value of the default image, comparing the variation of the calibrated luminance values of the set to γ = 2.2 has been targeted in ExPixel. 10 Calibration .. taking the average of the methods and also the value of each pixel intensity calculation method used in the experiment of the viewing range of the values of, represents the value of the brightness values when passing through a circularly polarizing filter before and after drawing 10: Carry ผับ Les ต์ tion change of บิ๊ Keru brightness values before and after the display from Figure 10 of each company in the default state, it can be set to high brightness value
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