采用图像传感器的成像式亮度计可通过短焦距成像物镜实现大视场和空间分辨的亮度测量，但仍存在图像传感器像素非线性响应，短焦物镜产生的强烈渐晕效应及图像边缘畸变等问题。因此提出了一种成像式亮度计校正方法，利用标准辐射源法进行线性校正与平场校正，以获得线性修正系数和平场校正矩阵，通过几何坐标标定法获得畸变校正矩阵。采用焦距为12 mm的物镜及200万pixel的图像传感器搭建了成像式亮度计，经校正后完成了液晶显示屏发光亮度测量，与商用分光辐射亮度计进行了对比测试，测量相对误差不超过±2%，实现了大视场高精度空间分辨亮度测量。

Chronic wounds affect around 2% of the world population with an annual multi-billion dollar cost to the healthcare system. This background pushes the development of new therapies and procedures for wound healing and its assessment. Among them, the potential of hydrogen (pH) assessment is an important indicator of the wound healing stage and condition. This paper presents the development of the first optical fiber-embedded smart wound dressing for pH assessment. An intrinsically pH-sensitive optical fiber is fabricated using a polydimethylsiloxane (PDMS) precursor doped with rhodamine B dye. Raman and Fourier transform infrared (FTIR) spectroscopies are performed in order to verify the presence of rhodamine B and PDMS in the fiber samples. Then, the fiber is embedded in gauze fabric and hydrocolloid wound dressing. In addition, such low Young’s modulus of PDMS fiber enables its use as a highly sensitive pressure sensor, where the results show that the fiber-embedded bandage can measure pressures as low as 0.1 kPa with a high linearity in the range of 0 to 0.3 kPa. The smart bandage is subjected to different pH, which resulted in a wavelength shift of 0.67 nm/pH when the absorption peak at 515 nm was analyzed. Furthermore, pH increase leads to linear decrease of the transmitted optical power (R2 of 0.998), with rise and fall times below 20 s and 30 s, respectively. Therefore, the proposed optical fiber-embedded smart bandage enables the simultaneous assessment of pressure and pH on the wound region.