What are the major determinants of an image's spatial resolution?

The major determinants of an image's spatial resolution are pixel size and matrix size. Spatial resolution refers to the ability to distinguish between two closely spaced objects in an image.

Pixel size plays a critical role because smaller pixels can capture finer details. If the pixel size is too large relative to the objects being imaged, the resulting images will be less detailed and may merge nearby objects into one.

Matrix size, which refers to the number of pixels in an image, also directly influences spatial resolution. A larger matrix size means more pixels are used to represent an image, allowing for more detail and finer features to be resolved within that image. When both pixel size and matrix size are optimized, higher spatial resolution can be achieved, leading to clearer and more accurate representations of the subject being imaged.

The other answer choices reflect factors related to image quality but do not directly affect spatial resolution in the same way. Color depth and brightness relate more to how colors are represented and the overall exposure of the image rather than its ability to resolve fine details. Contrast ratio pertains to the differentiation between light and dark areas but does not influence the physical ability to resolve objects spatially. Similarly, field of view describes the extent of the observable area, while resolution limit pertains to the