Zaliman Sauli
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Preferred name
Zaliman Sauli
Official Name
Zaliman, Sauli
Alternative Name
Sauli, Zaliman B.
Sauli, Zaliman
Sauli, Z.
Main Affiliation
Scopus Author ID
24554644300
Researcher ID
FWC-2779-2022

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  • Publication
    Breast surface variation phase map analysis with digital fringe projection
    (SPIE, 2019)
    Wan Mokhzani Wan Norhaimi
    ;
    Zaliman Sauli
    ;
    Hasnizah Aris
    ;
    Mukhzeer Mohamad Shahimin
    ;
    MAM Azmi
    ;
    Wong, K.
    ;
    Vithyacharan Retnasamy
    ;
    Rajendaran Vairavan
    ;
    Christopher R. Valenta
    ;
    Masafumi Kimata
    Breast carcinoma has become one of the most frequently diagnosed life threatening cancer among women. Early detection of breast cancer is highly essential with the aid of non-contact imaging modalities. Recently, non-contact breast imaging methods based on fringe projection has been developed for breast surface change inspection. In this work, a non-contact digital fringe projection imaging modality that utilizes phase shifting fringe patterns for identifying surface changes has been developed for investigating breast surface changes caused by the presence of tumors. A medical grade prosthetic breast was used as the experimental subject and subjugated to breast changes through the enlargement of a round shaped silicon catheter as a tumor. The fringes were projected onto the breast surface based on the three steps phase shift fringe projection. The fringe patterns consisted of a large fringe width to enable the breast image to be confined in fewer fringe patterns. A resulting phase map was obtained where pixel coordinate marking was conducted on the phase map breast image. Each of the pixel’s coordinate was compared to identify the location of the surface changes. A range of 2-9 pixel coordinate shifts from the 0.5 – 2 cm tumor growth were obtained from the results which demonstrated the capability of using phase map analysis from digital fringe projection in identifying surface changes of the women’s breast.
  • Publication
    High power LED heat dissipation analysis via copper diamond slug
    ( 2013)
    Rajendaran Vairavan
    ;
    Zaliman Sauli
    ;
    Vithyacharan Retnasamy
    ;
    Kamarudin Hussin
    The emergence of high power light emitting diode as a novel electronic based light source is due to its vast advantage in terms of optical efficacy, low power consumption and enhanced life time. However, the performances of the LEDs are dependent on the junction temperature as it is inherited high heat production. Hence, proper evaluation of the junction temperature is very significant. In this paper, the heat dissipation of single chip high power LED attached to copper diamond based cylindrical heat slug was scrutinized through simulation. The heat dissipation was characterized in terms of junction temperature. In addition, the stress of the LED chip is evaluated with varied input power. Ansys version 11 was used for the simulation. The simulated results reveal that at input power of 1 W, the max junction temperature of the LED is 114.69°C.
      1  13
  • Publication
      32  2
  • Publication
    Digital fringe projection system for round shaped breast tumor detection
    ( 2020-01-01)
    Wan Mokhdzani Wan Nor Haimi
    ;
    Zaliman Sauli
    ;
    Hasnizah Aris
    ;
    Vithyacharan Retnasamy
    ;
    Rajendaran Vairavan
    ;
    Muhamad Hafiz Ab Aziz
    The digital fringe projection has been widely used in the field of surface imaging however its application in the field of body imaging especially for human breasts is still quite limited. Currently, the common imaging modality for breast tumor diagnoses are breast ultrasound and mammogram. There are advantages and limitations of using the mammogram and ultrasound in terms of the procedure of the process and the non-invasive nature of the procedure. In this work, an automated digital fringe projection system is developed to execute the imaging of surface changes of a helical shaped phantom breast. The fringe projection setup utilizes a computer, LCD projector, and a CCD camera. The tumor used was round-shaped with a diameter size of 1.5 and 2 cm. The fringe pattern was projected through the three-step phase shift where a resulting phase map was obtained. Results demonstrated that the system was able to identify an average pixel shift of five and ten on the breast surface caused by the presence of the round breast tumors.
      4  46
  • Publication
    Breast surface variation phase map analysis with digital fringe projection
    ( 2019)
    Wan Mokhzani Wan Norhaimi
    ;
    Zaliman Sauli
    ;
    Hasnizah Aris
    ;
    Mukhzeer Mohamad Shahimin
    ;
    MAM Azmi
    ;
    K Wong
    ;
    Vithyacharan Retnasamy
    ;
    Rajendaran Vairavan
    ;
    Christopher R. Valenta
    ;
    Masafumi Kimata
      1  31
  • Publication
    Digital fringe projection for hand surface coordinate variation analysis caused by osteoarthritis
    ( 2017)
    Wan Mokhdzani Wan Nor Haimi
    ;
    Cheek Hau Tan
    ;
    Vithyacharan Retnasamy
    ;
    Rajendaran Vairavan
    ;
    Muhammad Hafiz Ab Aziz
    ;
    Zaliman Sauli
    ;
    Nor Roshidah Yusof
    ;
    Nor Azura Malini Ahmad Hambali
    ;
    Ahmad Syahir Ahmad Bakhit
    Hand osteoarthritis is one of the most common forms of arthritis which impact millions of people worldwide. The disabling problem occurs when the protective cartilage on the boundaries of bones wear off over time. Currently, in order to identify hand osteoarthritis, special instruments namely X-ray scanning and MRI are used for the detection but it also has its limitations such as radiation exposure and can be quite costly. In this work, an optical metrology system based on digital fringe projection which comprises of an LCD projector, CCD camera and a personal computer has been developed to anticipate abnormal growth or deformation on the joints of the hand which are common symptoms of osteoarthritis. The main concept of this optical metrology system is to apply structured light as imaging source for surface change detection. The imaging source utilizes fringe patterns generated by C++ programming and is shifted by 3 phase shifts based on the 3 steps 2 shifts method. Phase wrapping technique and analysis were applied in order to detect the deformation of live subjects. The result has demonstrated a successful method of hand deformation detection based on the pixel tracking differences of a normal and deformed state.
      5  26
  • Publication
    Heat dissipation analysis under natural convection condition on high power LED
    ( 2013)
    Rajendaran Vairavan
    ;
    Zaliman Sauli
    ;
    Vithyacharan Retnasamy,
    ;
    Kamarudin Hussin
    As the technology downscales with superior power and increased package density, the thermal effects of the high power LED are significant. Thus, the operating junction temperature of the high power light emitting diodes has to be reduced. In this paper, evaluation on single chip high power light emitting was done. The prime motive of this work was to assess the effect of heat slug size on the junction temperature and stress of LED chip under natural convection condition at ambient temperature of 25°C. Two sizes of rectangular heat slug were used. Simulation was carried out using Ansys version 11. Input power of 0.1W and 1W was applied to LED. Simulated results indicated that a larger slug size is favorable for a lower operating junction temperature and stress of the LED chip.
      6  18