JPH02243930A - Irregular color inspecting device - Google Patents

Irregular color inspecting device

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Publication number
JPH02243930A
JPH02243930A JP1064306A JP6430689A JPH02243930A JP H02243930 A JPH02243930 A JP H02243930A JP 1064306 A JP1064306 A JP 1064306A JP 6430689 A JP6430689 A JP 6430689A JP H02243930 A JPH02243930 A JP H02243930A
Authority
JP
Japan
Prior art keywords
chromaticity
vector
average
color
information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP1064306A
Other languages
Japanese (ja)
Inventor
Hiroshi Tsukada
弘志 塚田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP1064306A priority Critical patent/JPH02243930A/en
Publication of JPH02243930A publication Critical patent/JPH02243930A/en
Pending legal-status Critical Current

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  • Image Analysis (AREA)
  • Testing Of Individual Semiconductor Devices (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Processing Or Creating Images (AREA)
  • Image Processing (AREA)

Abstract

PURPOSE:To inspect unequal colors without having fluctuations by deciding the chromaticity information from the image signals obtd. by image pickup of an object to be inspected and coding and displaying the decided chromaticity information. CONSTITUTION:The respective image signals of R (red) color, G (green) color and B(blue) color are outputted from a TV camera 1 and are sent to a chromaticity deciding section 10. The chromaticity information is decided by each of picture elements from the respective image signals in the deciding section 10. This chromaticity information is stored in a chromaticity information memory 11 according to the respective positions of one picture element. The chromaticity information decided by the deciding section 10 is coded, i.e. converted to vectors and is displayed in a chromaticity displaying means 12. Namely, the chromaticity information for one picture element is divided to the plural of respective regions and the average of the chromaticity of every region thereof is calculated in a average chromaticity calculating section 13. The average chromaticity of each region is converted to the vector and the coordinates of the display positions of the average chromaticity vector are determined in a chromaticity vector converting section 14. The average chromaticity vector and the coordinates thereof are sent to a monitor TV 15.

Description

【発明の詳細な説明】 [発明の目的] (産業上の利用分野) 本発明は、カラー固体撮像装置(CCD)や塗装等の色
むらを検査する色むら検査装置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a color unevenness inspection device for inspecting color unevenness in a color solid-state imaging device (CCD), paint, etc.

(従来の技術) 第6図はカラーCCDチップの色むら検査に適用される
色むら検査装置の構成図である。テレビジョンカメラ1
には被検査体としてのCODチップが挿入されている。
(Prior Art) FIG. 6 is a block diagram of a color unevenness inspection apparatus applied to color unevenness inspection of a color CCD chip. television camera 1
A COD chip as an object to be inspected is inserted into the holder.

一方、2はライトボックスであって、このライトボック
ス2からは白色光が全面から一様に放射されている。し
かるに、テレビジョンカメラlはライトボックス2の前
方に配置されてライトボックス2を撮像し、その画像信
号を出力する。そして、この画像信号はカラーモニタテ
レビジョン3に送られることによりライトボックスの画
像が映し出される。そこで、CODチップの色むら検査
は、検査員が直接このモニタテレビジョン3に映し出さ
れている画像を目視することによって行われる。
On the other hand, 2 is a light box, and from this light box 2 white light is uniformly emitted from the entire surface. However, the television camera l is placed in front of the light box 2, captures an image of the light box 2, and outputs the image signal. This image signal is then sent to the color monitor television 3 to display the image of the light box. Therefore, the color unevenness inspection of the COD chip is performed by an inspector directly viewing the image displayed on the monitor television 3.

(発明が解決しようとする課題) 従って、色むら検査は官能検査の要素が大きいものであ
って、各検査員の主観によってばらつきが生じ、このた
めCCDチップ製造においてCODチップの品質を均一
化することが非常に困難である。
(Problem to be Solved by the Invention) Therefore, color unevenness inspection has a large element of sensory inspection, and variations occur depending on the subjectivity of each inspector. Therefore, it is difficult to make the quality of COD chips uniform in CCD chip manufacturing. It is extremely difficult to do so.

そこで本発明は、検査員の官能検査の要素を最小限とし
てばらつきのない適切な色むら検査ができる色むら検査
袋0置を提供することを目的とする。
SUMMARY OF THE INVENTION An object of the present invention is to provide zero color unevenness testing bags that can perform appropriate color unevenness testing without variation by minimizing the elements of sensory testing by inspectors.

[発明の構成] (課題を解決するための手段) 本発明は、被検査体の撮像により得られる画像信号から
色度情報を判断する色度判断手段と、この色度判断手段
により判断された色度情報を初号化して表示する色度表
示手段とを備えて上記目的を達成しようとする色むら検
査装置である。
[Structure of the Invention] (Means for Solving the Problems) The present invention provides a chromaticity determining means for determining chromaticity information from an image signal obtained by imaging an object to be inspected, and a method for determining chromaticity information determined by the chromaticity determining means. This is a color unevenness inspection device that attempts to achieve the above object by including a chromaticity display means that initializes and displays chromaticity information.

(作 用) このような手段を備えたことにより、被検査体の撮像に
より得られる画像信号から色度判断手段は色度情報を判
断し、この判断された色度情報を色度表示手段は符号化
して表示する。
(Function) By providing such a means, the chromaticity determining means determines chromaticity information from the image signal obtained by imaging the object to be inspected, and the chromaticity displaying means uses this determined chromaticity information. Encode and display.

(実施例) 以下、本発明の一実施例について図面を参照して説明す
る。なお、第5図と同一部分には同一符号を付してその
詳しい説明は省略する。
(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. Note that the same parts as in FIG. 5 are given the same reference numerals, and detailed explanation thereof will be omitted.

第1図はCODチップの色むら検査に適用される色むら
検査装置の構成図である。テレビジョンカメラ1からは
R(赤)色、G(緑)色及びB(青)色の各画像信号が
出力されて色度判断部10に送られている。この色度判
断部10は各画像信号から例えば各画素ごとに色度情報
つまり色相、彩度を判断する機能を育するものであり、
この色度情報は1画像の各位置に応じて色度情報メモリ
11に記憶されるようになっている。°12は色度表示
手段であって、色度判断部10により判断された色度情
報を符号化つまりベクトルに変換して表示させる機能を
宜するものである。具体的には平均色度算出部13と色
度ベクトル変換部14とから構成されている。平均色度
算出部13は1画像分の色度情報を複数例えば24X2
4の各領域に分割し、これら領域ごとの色度の平均を算
出する機能を有するものであり、又色度ベクトル変換部
14は各領域の平均色度をベクトル(以下、平均色度ベ
クトルと呼ぶ)に変換するとともにこの平均色度ベクト
ルの表示位置の座標を求める機能を存するものである。
FIG. 1 is a configuration diagram of a color unevenness inspection apparatus applied to color unevenness inspection of COD chips. Image signals of R (red), G (green), and B (blue) are output from the television camera 1 and sent to the chromaticity determination section 10. This chromaticity determination unit 10 develops a function of determining chromaticity information, that is, hue and saturation, for each pixel from each image signal,
This chromaticity information is stored in the chromaticity information memory 11 according to each position of one image. 12 is a chromaticity display means, which has a function of encoding the chromaticity information determined by the chromaticity determining section 10, that is, converting it into a vector and displaying it. Specifically, it includes an average chromaticity calculation section 13 and a chromaticity vector conversion section 14. The average chromaticity calculation unit 13 calculates a plurality of chromaticity information for one image, for example, 24×2.
The chromaticity vector conversion unit 14 converts the average chromaticity of each area into a vector (hereinafter referred to as average chromaticity vector). It has the function of converting the average chromaticity vector into a vector (called chromaticity vector) and determining the coordinates of the display position of this average chromaticity vector.

そうして、この色度ベクトル変換部14で求められた平
均色度ベクトル及びその座標はモニタテレビジョン15
に送られるようになっている。
The average chromaticity vector and its coordinates obtained by the chromaticity vector converter 14 are then displayed on the monitor television 15.
It is now sent to

次に上記の如く構成された装置の作用について説明する
Next, the operation of the apparatus configured as described above will be explained.

ライトボックス2の前方にテレビジョンカメラ1が配置
される。そして、ライトボックス2から白色光が放射さ
れている状態にテレビジョンカメラ1がライトボックス
2を撮像すると、このテレビジョンカメラ1からR色、
0色、B色の各画像信号が出力されて色度判断部10に
送られる。
A television camera 1 is arranged in front of a light box 2. When the television camera 1 captures an image of the light box 2 while white light is being emitted from the light box 2, the television camera 1 captures the R color,
Image signals of 0 color and B color are output and sent to the chromaticity determination section 10.

この色度判断部10は各画像信号から各画素別に色度を
求める。ここで、色度の求め方は0.先ずR−G−Bの
各信号をA/D変換し、各画素のR−G−Bの値より、
下式のような近似計算式により色相H及び彩度Cへの変
換を行なう。
The chromaticity determination unit 10 determines the chromaticity for each pixel from each image signal. Here, the method for determining chromaticity is 0. First, each RGB signal is A/D converted, and from the RGB value of each pixel,
Conversion to hue H and saturation C is performed using an approximate calculation formula as shown below.

H−arccos (P )       (B≦G)
H−2π−arccos (P )    (G < 
B )ただし、 c 、、、1−3 ・win(R,G 、B )R+G
十B この色相Hと彩度Cにより色度ベクトルを求める。
H-arccos (P) (B≦G)
H-2π-arccos (P) (G <
B) However, c,,,1-3 ・win(R,G,B)R+G
10B Calculate the chromaticity vector using this hue H and saturation C.

そうして、このようにして求められた色度情報つまり色
相Hと彩度Cは各画素ごとに色度情報メモリ11の所定
アドレスに記憶される。この場合、色度情報は1画像の
各画素位置に対応しiこアドレスに記憶される。
The chromaticity information, that is, the hue H and the saturation C thus obtained, is then stored at a predetermined address in the chromaticity information memory 11 for each pixel. In this case, chromaticity information is stored at i addresses corresponding to each pixel position of one image.

そして、1画像分の色度情報が画像メモリ11に記憶さ
れると、平均色度算出部13は1画像を複数の領域に分
割し、これら領域ごとの平均色度つまり゛1也均彩度及
び平均色相互を算出する。次に色度ベクトル変換部14
は(12均色度算出部13で求められた各領域の平均彩
度及び平均色相から各領域ごとの・1乏均色度ベクトル
を求め、この平均色度ベクトルをモニタテレビジョン1
5に表示するための座標を求める。この場合、各平均色
度ベクトルの始点はそれぞれ各領域の中心位置に設定さ
れる。この結果、例えばテレビジョンカメラ]で撮像さ
れた画像が第2図に示すように0色及びB色の色むらの
生じているものであれば、モニタテレビジョン15には
第3図に示すような検査結果が表示される。なお、同図
に示す検査結果は6×6の各領域に分割した場合であり
、G色の色むらが生じた部分の各弔均色度ベクトルは第
4図に示すマンセル色空間のG色方向を向くとともにB
色の色むらが生じた部分の各平均色度ベクトルは8色方
向を向いている。従って、第3図に示す検査結果から色
むらの色の種類及びその色むらの程度が判別できる。
Then, when the chromaticity information for one image is stored in the image memory 11, the average chromaticity calculation unit 13 divides the one image into a plurality of regions, and calculates the average chromaticity of each of these regions, that is, and calculate the average color reciprocity. Next, the chromaticity vector converter 14
(12) Calculate the 1-poor homogeneous chromaticity vector for each area from the average saturation and average hue of each area calculated by the homogeneous chromaticity calculation unit 13, and calculate this average chromaticity vector on the monitor television 1.
Find the coordinates to display on 5. In this case, the starting point of each average chromaticity vector is set at the center position of each area. As a result, if the image captured by, for example, a television camera has uneven color of 0 color and B color as shown in FIG. The test results will be displayed. The test results shown in the figure are for the case where the area is divided into 6 x 6 areas, and each uniform chromaticity vector in the area where G color unevenness occurs is the G color in the Munsell color space shown in Figure 4. While facing the direction B
Each average chromaticity vector of a portion where color unevenness occurs is oriented in eight color directions. Therefore, the type of color of the uneven color and the degree of the uneven color can be determined from the test results shown in FIG.

このように上記一実施例においては、CCDチップの撮
像により香られる各画像信号から色度情報を判断してこ
の色度情報を色度ベクトルに変換して表示するようにし
たので、色むらをばらつき無く検査することができ、そ
のうえ色むらの状態を彩度及び色相として適確に検出す
ることができる。この結果、CCDチップの評価にばら
つきが生ぜずにCCDチップの製造においてその品質を
均一化できる。
In this way, in the above embodiment, the chromaticity information is determined from each image signal captured by the CCD chip, and this chromaticity information is converted into a chromaticity vector and displayed, so that color unevenness can be reduced. Inspection can be performed without variation, and moreover, the state of color unevenness can be accurately detected as saturation and hue. As a result, there is no variation in the evaluation of CCD chips, and the quality can be made uniform in the manufacture of CCD chips.

なお、本発明は上記一実施例に限定されるものでなくそ
の主旨を逸脱しない範囲で変形してもよい。例えば、上
記一実施例ではマンセル色空間座標−Lの色度ベクトル
で色むらを表示したが、第5図に示すように横軸にB−
Yをとるとともに縦軸にR−Yをとって色度ベクトルを
表わすようにしてもよい。又、各領域ごとの平均色度ベ
クトルを求めたが、各領域中の画素で特定の色度を持つ
もので代表させてもよい。例えば、最大彩度又は最小彩
度を持つ画素の色度ベクトルや各領域の中心座標に存在
する画素の色度ベクトルで代表させてもよい。さらに、
被検査体としてはCCDチップに限らず、塗装むらや液
晶表示器の色むら検査にも適用できる。
Note that the present invention is not limited to the above-mentioned embodiment, and may be modified without departing from the spirit thereof. For example, in the above embodiment, color unevenness is displayed using a chromaticity vector with Munsell color space coordinates -L, but as shown in FIG.
The chromaticity vector may be expressed by taking Y and taking RY on the vertical axis. Furthermore, although the average chromaticity vector for each area was determined, it may be represented by pixels in each area that have a specific chromaticity. For example, it may be represented by a chromaticity vector of a pixel having maximum saturation or minimum saturation, or a chromaticity vector of a pixel existing at the central coordinates of each region. moreover,
The object to be inspected is not limited to CCD chips, but can also be applied to inspection of paint unevenness and color unevenness of liquid crystal displays.

[発明の効果コ 以上詳記したように本発明によれば、検査Lユの官能検
査の要素を最小限としてばらつきのない適切な色むら検
査ができる色むら検査装置を提供できる。
[Effects of the Invention] As described in detail above, according to the present invention, it is possible to provide a color unevenness inspection apparatus that can perform appropriate color unevenness inspection without variation by minimizing the sensory test elements of the inspection L.

【図面の簡単な説明】[Brief explanation of drawings]

第1図乃至第4図は本発明に係わる色むら検査装置の一
実施例を説明するための図であって、第1図は構成図、
第2図は色むらの画像を示す図、第3図は検査結果を示
す図、第4図はマンセル色空間の模式図、第5図は変形
例を示す模式図、第6図は従来技術を示す図である。 1・・・テレビジョンカメラ、2・・・ライトボックス
、10・・・色度判断部、11・・・色度情報メモリ、
12・・・色度表示手段、13・・・平均色度算出部、
14・・・色度ベクトル変換部、15・・・モニタテレ
ビジョン。 出願人代理人 弁理士 鈴江武彦 第1 図 第2図 第3 図 第5 ズ −Y
1 to 4 are diagrams for explaining an embodiment of a color unevenness inspection device according to the present invention, and FIG. 1 is a configuration diagram;
Figure 2 is a diagram showing an image of color unevenness, Figure 3 is a diagram showing inspection results, Figure 4 is a schematic diagram of Munsell color space, Figure 5 is a schematic diagram showing a modified example, and Figure 6 is a diagram showing conventional technology. FIG. DESCRIPTION OF SYMBOLS 1... Television camera, 2... Light box, 10... Chromaticity judgment part, 11... Chromaticity information memory,
12... Chromaticity display means, 13... Average chromaticity calculation unit,
14... Chromaticity vector converter, 15... Monitor television. Applicant's agent Patent attorney Takehiko Suzue Figure 1 Figure 2 Figure 3 Figure 5 Z-Y

Claims (1)

【特許請求の範囲】[Claims] 被検査体の撮像により得られる画像信号から色度情報を
判断する色度判断手段と、この色度判断手段により判断
された色度情報を符号化して表示する色度表示手段とを
具備したことを特徴とする色むら検査装置。
Equipped with a chromaticity determining means for determining chromaticity information from an image signal obtained by imaging an object to be inspected, and a chromaticity display means for encoding and displaying the chromaticity information determined by the chromaticity determining means. A color unevenness inspection device featuring:
JP1064306A 1989-03-16 1989-03-16 Irregular color inspecting device Pending JPH02243930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1064306A JPH02243930A (en) 1989-03-16 1989-03-16 Irregular color inspecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1064306A JPH02243930A (en) 1989-03-16 1989-03-16 Irregular color inspecting device

Publications (1)

Publication Number Publication Date
JPH02243930A true JPH02243930A (en) 1990-09-28

Family

ID=13254429

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1064306A Pending JPH02243930A (en) 1989-03-16 1989-03-16 Irregular color inspecting device

Country Status (1)

Country Link
JP (1) JPH02243930A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05332838A (en) * 1992-05-26 1993-12-17 Imaizumi Shokai:Kk Color shading appearance inspection device
JPH0658813A (en) * 1992-08-10 1994-03-04 Imaizumi Shokai:Kk Color unevenness analyzer/inspector
JP2014109562A (en) * 2012-12-04 2014-06-12 Paparabo:Kk Color and luminance display apparatus and color and luminance display method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05332838A (en) * 1992-05-26 1993-12-17 Imaizumi Shokai:Kk Color shading appearance inspection device
JPH0658813A (en) * 1992-08-10 1994-03-04 Imaizumi Shokai:Kk Color unevenness analyzer/inspector
JP2014109562A (en) * 2012-12-04 2014-06-12 Paparabo:Kk Color and luminance display apparatus and color and luminance display method

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