PR Log - Global Press Release Distribution
DCR-TRV740 Battery, Sony DCR-TRV740 Battery, Sony DCR-TRV740 Camcorder Battery
By batteryreplacement Dated: Aug 07, 2010
provides DCR-TRV740 Battery, Sony Camcorder Battery. We carry huge range of Sony replacement batteries, chargers and power adapter at very competitive price to save you money. Sony dcr-trv740 battery replacement (li-polymer 1250mah) Sony dcr-trv740 battery Model no.: dcr-trv740 Battery type: li-polymer Battery volt: 7.2v Battery capacity: 1250mah Battery color: dark grey Battery weight: 105g Battery dimension: 55.50x38.60x20.50mm Battery category: sony camcorder battery This info comes from: http:// www.battery-replacement.com/sony-dcr-trv740-battery-pack-2788-56090.html This camcorder battery can replace the following part numbers: Sony Np-fm30 Np-fm50 Np-fm51 Np-qm50 Np-qm51 This camcorder battery is also compatible with the following models: Sony Ccd-tr108 Ccd-tr208 Ccd-tr408 Ccd-tr748 Ccd-tr748e Ccd-trv106k Ccd-trv107 Ccd-trv108 Ccd-trv108e Ccd-trv116 Ccd-trv118 Ccd-trv126 Ccd-trv128 Ccd-trv138

Page 1/6

Ccd-trv208 Ccd-trv208e Ccd-trv218 Ccd-trv218e Ccd-trv228 Ccd-trv228e Ccd-trv238 Ccd-trv238e Ccd-trv308 Ccd-trv318 Ccd-trv328 Ccd-trv338 Ccd-trv408 Ccd-trv408e Ccd-trv418 Ccd-trv418e Ccd-trv428 Ccd-trv428e Ccd-trv438e Ccd-trv608 Ccd-trv730 Ccd-trv740 Ccd-trv96k Cyber-shot dsc-f707 Cyber-shot dsc-f717 Cyber-shot dsc-f828 Cyber-shot dsc-r1 Cyber-shot dsc-s30 Cyber-shot dsc-s50 Cyber-shot dsc-s70 Cyber-shot dsc-s75 Cyber-shot dsc-s85 Dcr-dvd100 Dcr-dvd100e Dcr-dvd101 Dcr-dvd101e Dcr-dvd200 Dcr-dvd200e Dcr-dvd201 Dcr-dvd201e Dcr-dvd300 Dcr-dvd301 Dcr-dvd91 Dcr-dvd91e Dcr-hc1 Dcr-hc14 Dcr-hc14e Dcr-hc15 Dcr-hc15e Dcr-hc88

Page 2/6

Dcr-pc100 Dcr-pc101 Dcr-pc101e Dcr-pc101k Dcr-pc103 Dcr-pc103e Dcr-pc104 Dcr-pc104e Dcr-pc105 Dcr-pc105e Dcr-pc105k Dcr-pc110 Dcr-pc110e Dcr-pc115 Dcr-pc115e Dcr-pc120 Dcr-pc120bt Dcr-pc120e Dcr-pc300k Dcr-pc330 Dcr-pc330e Dcr-pc6 Dcr-pc6e Dcr-pc8 Dcr-pc8e Dcr-pc9 Dcr-pc9e Dcr-trv10 Dcr-trv10e Dcr-trv11 Dcr-trv116 Dcr-trv116e Dcr-trv118e Dcr-trv11e Dcr-trv12e Dcr-trv14 Dcr-trv140 Dcr-trv140e Dcr-trv140u Dcr-trv145 Dcr-trv145e Dcr-trv14e Dcr-trv15 Dcr-trv150 Dcr-trv15e Dcr-trv16 Dcr-trv16e Dcr-trv17 Dcr-trv17e Dcr-trv17k

Page 3/6

Dcr-trv18 Dcr-trv18e Dcr-trv18k Dcr-trv19 Dcr-trv19e Dcr-trv20 Dcr-trv20e Dcr-trv22 Dcr-trv22e Dcr-trv22k Dcr-trv230 Dcr-trv230e Dcr-trv235 Dcr-trv235e Dcr-trv238 Dcr-trv238e Dcr-trv239 Dcr-trv239e Dcr-trv24 Dcr-trv240 Dcr-trv240e Dcr-trv240k Dcr-trv245 Dcr-trv245e Dcr-trv24e Dcr-trv25 Dcr-trv250 Dcr-trv250e Dcr-trv255 Dcr-trv255e Dcr-trv25e Dcr-trv260 Dcr-trv265 Dcr-trv265e Dcr-trv27 Dcr-trv270e Dcr-trv27e Dcr-trv280 Dcr-trv285e Dcr-trv30 Dcr-trv300k Dcr-trv30e Dcr-trv325 Dcr-trv33 Dcr-trv330 Dcr-trv330e Dcr-trv33e Dcr-trv33k Dcr-trv340 Dcr-trv340e

Page 4/6

Dcr-trv345 Dcr-trv345e Dcr-trv350 Dcr-trv351 Dcr-trv355 Dcr-trv355e Dcr-trv360 Dcr-trv361 Dcr-trv38 Dcr-trv39 Dcr-trv40 Dcr-trv40e Dcr-trv430 Dcr-trv430e Dcr-trv460 Dcr-trv460e Dcr-trv480 Dcr-trv480e Dcr-trv50 Dcr-trv50e Dcr-trv530 Dcr-trv530e Dcr-trv6 Dcr-trv60 Dcr-trv60e Dcr-trv6e Dcr-trv70 Dcr-trv70k Dcr-trv725 Dcr-trv730 Dcr-trv730e Dcr-trv738 Dcr-trv738e Dcr-trv740 Dcr-trv740e Dcr-trv75 Dcr-trv75e Dcr-trv8 Dcr-trv80 Dcr-trv80e Dcr-trv828 Dcr-trv828e Dcr-trv830 Dcr-trv830e Dcr-trv840 Dcr-trv8k Dcr-trv940 Dcr-trv940e Dcr-trv950 Dcr-trv950e

Page 5/6

Dcr-tv480 Dsr-pdx10 Dsr-pdx10p Gv-d1000(video walkman) Hdr-hc1 Hdr-hc1&hvr-a1 Hdr-hc1e Hdr-sr1 Hdr-sr1e Hdr-ux1 Hdr-ux1e Hvl-irm(infrared light) Hvl-ml20m (underwater video light) Hvr-a1 Hvr-a1e Hvr-a1j Hvr-a1n Hvr-a1p Hvr-a1u Mvc-cd200 Mvc-cd250 Mvc-cd300 Mvc-cd350 Mvc-cd400 Mvc-cd500 We also stock many different capacity battery replacement for sony dcr-trv740 http://www.battery-replacement.com/sony-camcorder-battery/sony-dcr-trv740-battery-56090.html We also sale sony dcr-trv740 battery charger, you can look at it via the following link: http://www.battery-replacement.com/sony-battery-charger/sony-dcr-trv740-charger-62202.html ### We specialize in all kind of Battery Replacewment and Battery Charger, Power Adapter. Our store carry the most Replacement Battery cover Laptop Battery, Camcorder Battery, Digital Camera Battery, Power Tool Battery to fulfill need of the market.

Category Tags Email City/Town State/Province Zip Country Shopping sony camcorder battery Click to email author Fremont California 94538 United States

Page 6/6

Three-Dimensional Thumb Motion Parameterization

J. Havlk, Z. Horck

This paper deals with three-dimensional thumb motion parameterization based on image processing. The nger motion is recorded using two camcorders shooting from two linear independent directions. This contribution describes the video records processing used for obtaining of thumb motion trajectory projection to the scan planes of camcorders. Subsequently there is explained the three-dimensional parameterization of thumb motion from the scan plane projections in this paper. The parameterized motions are used in biomedical engineering for research on correlations between a nger motions and a human brain activity. Keywords: motion parameterization, image processing

1. Introduction

The research of correlation between the human brain and muscle activity is one of the most important tasks in current biomedical engineering. The knowledge of this correlation would be signicant for a comprehension of the human brain function. Due to a complexity of human brain function it is proper to restrict the research to a simple body motion. The free three-dimensional motion of thumb has been chosen as the appropriate motion. The muscle activity is represented by the parameters of the thumb trajectory, the brain activity is represented by the electro-encephalograph (EEG) signals. There are a few requirements to have to be met during the recording of the thumb motion:
contactless sensing, The sensing of thumb motion has to be strictly contactless, because any contact between the thumb and sensor could affect the EEG signals through neural feedbacks. Not only for that reason the sensing is based on video recording. data synchronization. The video records have to be synchronized with at the same time recorded EEG signals to allow the research correlations between these signals.

2. Signals Recording

As it is written above the sensing process is completely contactless. The thumb motion is shot by two camcorders from two linear independent directions (see Figure 1). The standard DV camcorders (Sony DCR-TRV250E) are used for video recording. The distance between each camcorder and the sensed object is approximately 1.3 m, the distance between the camcorders is approximately 1 m. The outputs of recording are two video sequences in PAL standard (pixels, 25 frames per second) stored on a tape. The thumb is marked by special mark, concentric black and white circles (see Figure 3). The thumb motion is parameterized tracing these marks as is described further.
Ing. Jan HAVLIK, FEE CTU in Prague, Technicka 2, CZ-Praha 6, phone: +352 048, email: xhavlikj@fel.cvut.cz Ing. Zdenek HORCIK, FEE CTU in Prague, Technicka 2, CZ-Praha 6, phone: +352 049, email: horcik@fel.cvut.cz
The EEG signals are sensed using the standard EEG measuring device (see Figure 2) and stored directly to a personal computer. The synchronization between the video and EEG signals is realized using the blinking LED [2], the light from LED is recorded to the video sequences (see Figure 3) and the rectangular drive signal is recorded to the EEG measuring device.
Figure 1 General Diagram of Video Recording
Figure 2 Sensing Laboratory
3. Motion Parameterization
Recorded video sequences are stored in personal computer after the video recording. The general diagram of the parameterization process is shown in Figure 4. Both video sequences are pre-processed and 2-D parameterized separately. The input frames are converted to 8 bit greyscale representation rstly. The edge detection based on Roberts algorithm is applied after the conversion. The edge density, the number of edges in selected area, are computed from the edge image. In aspect of thumb mark shape it is evident that the location of mark approximately corresponds to the maximum of edge density. By that reason the area of interest, a small image placed around the maximum of edge density, is cut out from the frame. The area of interest is thresholded to 1 bit B/W image using the triangle algorithm [3]. The mass centre of the mark is computed from the thresholded image at the next step.

(a) Left camcorder

(b) Right camcorder
Figure 3 Example of stored frames
The results of 2-D parameterization are matrices with the sequence of mass centres coordinates for each mark in each frame. Each matrix corresponds with one input video sequence. The mean difference between the computed mass centres and the coordinates determined by manual process is less than 0.5 px [1].

The three-dimensional coordinates are computed after these two 2-D parameterizations. The optical axes of both camcorders lie in the plane xy (see Figure 1) and the thumb moves in general 3-D space xyz. Designate us the scan plane of rst camcorder as az and the scan plane of second camcorder as bz (see Figure 5). The aim of 3-D parameterization is to nd the original coordinates [x, y, z] of thumb mark if we know the projection to the scan planes az and bz.

CAMCORDER #1

2-D PARAMETERIZATION

3-D PARAMETERIZATION

PARAMETERIZED MOTIONS

CAMCORDER #2

Figure 4 General Diagram of Parameterization
Lets have a vector dr representing the thumb mark motion between two following frames. Using the camcorders the projections da and db are scanned. The magnitudes of vectors dx and dy could be computed as the intersection point coordinates of straight lines (1) parallel with camcorders optical axes and goes through the nal point of the vector dr. da dy = tan dx sin 2 db dy = tan + dx + sin 2 For the intersection point we can write using these equations da db dx = tan + dx +. 2 sin 2 sin
Solving (2) we get the result 1 da + db 2 sin
and substituting this result to (1) we get nally 1 da db. 2 sin
The magnitude of vector dz directly equals the z component of the projections da and db. It could be computed as the average zda + zdb. 2
The result of 3-D parameterization is the sequence of coordinates [x, y, z] representing the thumb motion trajectory. The rst term of this sequence is [0, 0, 0], the next elements represent the change of thumb mark location in appropriate frames. It means that all motions are traced relatively, it is no information about the real location of the thumb mark there, but it is only the information about the change of this location there.

4. Results

Presented parameterization was tested on the set of video sequences with thumb motions. The thumb moved between 4 stationary positions, one move was made with each synchronization pulse. The period of synchronization signal was 2 seconds, the length of video sequences was approximately 20 minutes (30000 frames, 600 moves). Usual duration of one move is a few frames, the rest of period is the stationary state. The scanned person was free to choose the direction of move. The video sequences were recorded in PAL standard (pixels, 25 frames per second), each frame of video sequences was processed as two separate half frames.

X Component [-]

1 0.-0.5 -1

SCA NP LAN E#

Y Component [-]

Half frame [-]

db dx da a x

1 0.-0.5 -1 1

E# LAN NP SCA

Z Component []

-0.5 -1
Figure 5 Vector Decomposition
Figure 6 Parameterization Result
The result of parameterization process is shown in Figure 6 (computed for rst 10000 half frames). The sequences of x, y and z coordinates are shown in this gure. The coordinates are normalized for the better transparency. The stationary states and the moves are visible very well.

5. Conclusion

The three-dimensional motion parameterization based on image processing was presented in this paper. A very low hardware requirements are the great advantage of presented method. There is no requirement to special hardware, the presented method requires only a pair of standard cheap DV camcorders for a video recording of the thumb motion and a personal computer for off-line processing of recorded video sequences. The experiments could be done in common neurological laboratory with standard EEG measuring device. There are no additional spatial requirements. The results of presented parameterization are appropriate to a thumb motion classication and to a research of correlations between the muscle and brain activity. This work has been supported by the research program No. MSM 6840770012 of the Czech Technical University in Prague (sponsored by the Ministry of Education, Youth and Sports of the Czech Republic).

References

[1] J. Havlk and Z. Horck, Finger motion parameterization based on image processing, in Biosignal 2004, pp. 321323, VUTIM Press, Brno, 2004. [2] J. Havlk and Z. Horck, Synchronization of EEG and video signals (in Czech), in Matlab 2004, pp. 186189, Humusoft, Prague, 2004. [3] G. W. Zack, W. E. Rogers, and S. A. Latt, Automatic measurement of sister chromatid exchange frequency, The Journal of Histochemistry and Cytochemistry, vol. 25, no. 7, pp. 741 753, 1977.