A Real-Time Apple Grading System Using Multicolor Space

Figure 5

(a) Original image. Thresholding results of the (b) “𝑆” component of HSV color space, (c) “𝑌” component of CIE 𝑋𝑌𝑍 color space, and (d) “𝑎” component of CIE 𝐿^∗𝑎^∗𝑏^∗ color space.

(a)

(b)

(c)

(d)